Category: Services

FEM analysis, or the element method, is a powerful numerical calculation method that offers significant benefits in modern mechanical engineering. It allows the strength, durability and performance of complex structures to be examined even before physical prototypes are produced. At Hefmec, FEM analysis is a key part of our strength calculation services, enabling us to identify design flaws at an early stage, optimise material usage and ensure the safety of structures. This leads to significant savings, faster product development and more durable end products.

Why is FEM analysis an important tool in modern mechanical engineering?

FEM analysis has become an indispensable tool in modern mechanical engineering because it allows accurate modelling of the behaviour of structures under different loading conditions even before physical prototypes are built. This virtual testing environment allows engineers to investigate and optimise design solutions in a cost-effective way.

At Hefmec, we use advanced FEM methods in our customer projects to produce reliable and accurate analyses. Our strength calculation team is made up of experienced engineering professionals – engineers and graduate engineers – with both solid practical experience and in-depth theoretical knowledge. This combination enables us to solve even the most demanding design challenges efficiently.

FEM analysis allows us to study stresses, deformations, vibrations and temperatures in structures. These analyses allow us to identify critical points in the structure and ensure that the designed structure can withstand the demands placed on it. This is particularly important in safety-critical applications where failure of the structure could have serious consequences.

Our agile working methods and extensive experience in using different FEM software allow for a fast and efficient analysis process. This speeds up the overall design process and ensures that our customers get optimal solutions in less time.

How does FEM analysis save costs in the prototyping phase?

FEM analysis delivers significant cost savings in the prototyping phase by reducing the number of physical prototypes required and the associated iterations. Each physical prototype is an investment that requires material, labour and testing resources – FEM analysis can significantly reduce the number of these costly prototyping iterations.

Hefmec’s advanced strength calculation services enable virtual testing at an early design stage. This means that potential design flaws can be identified and corrected before the first physical part is manufactured. We are ready to start strength calculations at short notice and provide expert resources when you need them.

The savings are tangible at many levels:

• Reduced material costs, as fewer physical prototypes are needed
• Hours saved in manufacturing and testing
• Faster market access by shortening the product development cycle
• Fewer ex-post corrections and changes

Especially for complex and expensive machine parts, the economic benefits of FEM analysis are highlighted. By using both linear and non-linear strength calculations, we can effectively simulate the behaviour of a structure under different loading conditions and find optimal design solutions without expensive trial-and-error cycles.

How does FEM analysis improve the reliability and durability of products?

FEM analysis improves the reliability and durability of products by enabling accurate modelling of the behaviour of structures under different loading and conditions. This allows us to anticipate and eliminate structural weaknesses at the design stage, before they cause problems in real life.

Hefmec’s experience in strength calculations helps us to ensure that our customers’ products have optimum durability without oversizing. This balance is key to our ability to offer lifetime warranties on many of our products. Our rigorous analysis ensures that structures are strong enough to withstand the loads placed on them, while avoiding unnecessary use of material.

FEM analysis also allows:

• Fatigue analysis to predict the fatigue life of a structure under repeated loads
• Temperature analyses to ensure the performance of the structure at different temperatures
• Vibration analyses to avoid harmful resonant frequencies
• Impact and impact analyses to ensure the resistance of the structure to sudden loading conditions

We use our expertise to ensure the safety of structures from the very beginning of the design process. At the same time, we create the strength calculations required for CE documentation. Our customers need accurate and reliable strength calculations to ensure both the durability of structures and the safety of workers – that’s what we at Hefmec provide.

When should you use an external FEM analysis service?

A company should use an external FEM analysis service, especially when it does not have the skills or resources to perform demanding strength analysis tasks. Using an external expert is cost-effective and flexible, as specialist expertise is often only required on a project-by-project basis.

An expert like Hefmec is a useful partner in the following situations:

• Demanding design challenges that require specialised expertise in strength calculations
• A fast-track project schedule that requires immediate analytical capacity
• The need for objective third-party verification
• Preparation of strength calculations for CE marking
• Optimising an existing product to improve material use or durability

At Hefmec, we have a flexible operating model where we provide expert resources exactly when you need them. We draw on a wide range of in-house expertise to ensure accurate and reliable structural analysis. We always report back to the client in a clear and understandable way, making recommendations for modifications where necessary or redesigning the structure to meet requirements.

By finding solutions to even the most complex problems quickly and cost-effectively, our customers can focus on their core business and be confident that their strength calculations are being handled professionally. This is one of the reasons why we have the most satisfied customers in the industry.

What does the knowledge gained from the FEM analysis mean for the further development of the product?

The knowledge gained from FEM analysis provides a solid basis for further product development by providing a deep understanding of the behaviour of the structure under different conditions. This knowledge is not only valuable in optimising the current product, but also provides a valuable repository of knowledge for future design projects.

Hefmec’s holistic approach integrates FEM analysis into a broader productivity development process. The results of the analyses are systematically used in future projects, enabling continuous learning and development. This cumulative knowledge helps to avoid problems encountered in the past and to apply proven solutions in new contexts.

The information from the FEM analysis contributes to further development in a number of ways:

• Optimising material choices for future generations of products
• Identification of critical areas to which particular attention should be paid in future design versions
• Development of product variants for different uses based on existing analysis
• Expanding product families, using previously validated structural solutions

With advanced analytics, we can help our clients achieve significant competitive advantages. Accurate strength calculations not only improve product safety, but also reduce production lead times and risks. As a result, the benefits of FEM analysis extend far into the future, supporting the sustainable growth and competitiveness of the customer’s business.

Mastering the most advanced calculation methods enables the development of future solutions in an increasingly competitive environment. Hefmec’s team of experts can apply FEM analysis to a wide range of industrial challenges, providing solutions that are technically and economically correct and will continue to improve productivity in the future.

Choosing an effective maintenance method for industrial machinery requires a careful analysis of the type of equipment, its criticality to production and the resources available. The right approach will improve machine life, minimise downtime and optimise total cost of ownership. The choice of maintenance concept should take into account the sectoral requirements and the specificities of production in order to develop a systematic maintenance strategy.

How to choose the right maintenance methods for machinery in a production plant?

In an industrial environment, proper maintenance of machinery is critical for business continuity. At the heart of the selection process is an accurate inventory of equipment, taking into account its technical design, age and criticality to the production process. Operating environment conditions such as temperature, humidity and dust levels have a significant impact on maintenance needs.

The criticality of production is a key factor – the more costly the downtime, the more thorough a proactive maintenance strategy is needed. The availability of resources, such as the skills of in-house maintenance staff, contributes to determining the optimal maintenance concept. Hefmec’s experts analyse these factors in comprehensive maintenance surveys, which assess current methods and identify areas for improvement.

Based on the maintenance survey, a customised maintenance plan is created for the fleet to improve reliability and extend the life of the machines. A strategic partnership with Hefmec enables us to ensure the continuous availability of production equipment and minimise unexpected downtime.

What is the difference between preventive and corrective maintenance?

Predictive and corrective maintenance represent two fundamentally different approaches to industrial maintenance. Predictive maintenance is based on a planned approach – equipment is regularly serviced before failure occurs. Corrective maintenance, on the other hand, responds to problems only when they occur, when the equipment has already failed and requires immediate attention.

The benefits of predictive maintenance include better predictability of production, longer equipment life and lower overall costs in the long run. The disadvantages are higher immediate costs and possibly “over-maintenance” if schedules are not based on actual wear and tear.

Corrective maintenance is cheaper in the short term, but causes unforeseen downtime and often higher overall costs in the long term. Hefmec offers a predictive maintenance service based on the condition of the fleet, using condition monitoring tools to determine timely maintenance. This optimises both maintenance costs and production uptime.

When should the maintenance plan be updated?

The maintenance plan is not a permanent document, but a living tool that needs to be regularly assessed and updated. There is a clear need for updating as the machinery fleet ages and the frequency of failures increases. Changes in production requirements, such as capacity increases or stricter quality standards, also require a review of the maintenance strategy.

Technological advances are a major driver – new condition monitoring methods and IoT tools are enabling increasingly accurate predictive maintenance. In addition, changes in legislation, standards or safety requirements may require a review of maintenance processes.

Hefmec experts recommend a thorough review of the maintenance plan at least annually and always in the event of major production changes. We offer plant-specific consultancy to optimise maintenance plans, analysing current operating models and identifying areas for improvement to improve cost-effectiveness and production reliability.

How do maintenance methods affect plant efficiency?

The impact of maintenance methods on overall efficiency is wide-ranging. Correctly selected and implemented maintenance practices are directly reflected in production OEE (Overall Equipment Effectiveness) figures. Unplanned downtime is significantly reduced when potential failures are detected and repaired before the actual breakdown occurs.

The quality of maintenance also affects the performance of machinery and the quality of products. A well-maintained machine produces fewer quality deviations and operates at the designed speed. From a total cost of ownership perspective, an optimised maintenance programme reduces both maintenance costs and production losses.

The experience of Hefmec customers shows concrete results: in one paper mill, the introduction of a predictive maintenance programme for critical equipment reduced unplanned downtime by 37% in the first year. In a machine shop, optimising the maintenance plan improved machine availability by 18% and significantly reduced quality costs.

Careful engineering is the cornerstone of product development, determining the functionality, durability, manufacturability and practicality of a product. Engineering design defines the structural characteristics of the product, the material requirements and the relationships between components, enabling innovative ideas to be turned into tangible products. Effective mechanical design reduces production costs, improves quality and shortens time to market.

Why is mechanical design an important part of product development?

At the critical focal point of product design is mechanical design, which is the bridge between an abstract idea and a working product. It is a holistic process that takes into account the form, function and manufacturing aspects of the product. Successful mechanical design not only ensures the functionality of the product, but also its safe and reliable use throughout its life cycle.

A well-designed mechanical structure acts as the backbone of the product, withstanding the stresses of use and varying environmental conditions. At Hefmec, we see every day how the structural design of a product directly affects the competitiveness and ultimately the market position of our customers’ products. In quality product development, mechanical design is not just part of the process – it is a key factor that enables innovation to become a reality.

What exactly does mechanical design mean in product development?

Mechanical design involves the definition, development and optimisation of the physical structure, components and mechanisms of a product. It is a branch of engineering that applies engineering, materials science and structural design to achieve a functional product.

In practice, mechanical design covers several key areas:

• Structural design – determining the strength, stiffness and other mechanical properties of the product
• Material choices – selecting appropriate materials based on functionality, durability and cost
• Tolerances – defining manufacturing accuracy to ensure functionality
• Assemblies – designing for compatibility and installability of parts
• Functionality – ensuring practical functionality and ergonomics

Mechanical design differs from other areas of design by focusing specifically on the physical and mechanical properties of the product. Whereas electronic design focuses on electrical components and software design on digital solutions, mechanical design ensures that the product performs as expected in the physical world.

How does mechanical design affect product quality and cost?

Professional mechanical design is directly reflected in product quality and cost-effectiveness. A well-designed product is reliable, durable and easy to manufacture, which is reflected in the total cost of ownership throughout the product’s life cycle.

From a quality point of view, the mechanical design affects the product:

• Sustainability and reliability
• Usability and ergonomics
• Serviceability and repairability
• Aesthetics and level of finish

From a cost point of view, careful mechanical design will reduce costs significantly:

• Use of materials through optimisation
• Production time and costs
• Reduced assembly time thanks to simplified structures
• Guarantee costs due to better durability

A concrete example of cost savings is a Hefmec customer project, where the product assembly time was reduced by 40% by optimising the number of parts and fastening mechanisms. This resulted in significant annual savings in production costs, while improving product quality through reduced assembly errors.

When should a company outsource mechanical design?

Outsourcing mechanical design is a strategic decision that can bring significant benefits to a company in the right circumstances. Outsourcing makes particular sense in the following situations:

• Lack of resources – when a company’s own design team is fully staffed or lacks design expertise altogether
• Need for specific expertise – when a project requires specific expertise that cannot be found in-house
• Project urgency – when the schedule is tight and a quick response is needed
• Temporary – for one-off or infrequent planning needs

The key benefits of outsourcing are cost-efficiency, flexibility and access to a wide range of specialised expertise. Partners such as Hefmec offer deep expertise in different industries and technologies, which can bring new perspectives and solutions to product development.

The best results are typically achieved through long-term cooperation, where the external partner gets to know the client’s business and needs in depth. In this case, outsourcing mechanical design becomes a strategic competitive advantage.

How does mechanical design support innovation?

Mechanical design acts as a catalyst in the innovation process. It enables abstract ideas to be turned into working prototypes that can be used to test and refine concepts. A skilled designer can identify technical constraints and find creative solutions to them.

Key elements of mechanical design that support innovation:

• Rapid prototyping and iterative development
• Simulations and analysis before physical implementation
• Considering manufacturability already at the design stage
• Application of new materials and technologies

A good example of the power of mechanical design as an enabler of innovation is modern 3D printing technologies, where design freedom has led to the development of entirely new product structures. Such structures would be impossible to realise using traditional manufacturing methods. Skilled mechanical designers can exploit these opportunities to create products with previously unattainable features.

The role of mechanical design in future product development

Mechanical design is undergoing a major transformation driven by digitalisation, automation and sustainable development. Traditional mechanical design is being replaced by new approaches that integrate smart technologies and sustainable solutions.

Future mechanical design will emphasise:

• Digital duplicates – virtual counterparts of physical products, allowing simulation and optimisation
• Generative design – using artificial intelligence to create optimal structures
• Circular economy and sustainable development – considering the recyclability and reuse of materials
• New manufacturing methods – 3D printing and other additive technologies

At Hefmec, we see how mechanical design is becoming an increasingly integrated part of the overall product development process. The boundaries between different design disciplines are blurring as mechanical structures are seamlessly integrated with electronics and software. This requires designers to have a broader range of skills and the ability to work in multidisciplinary teams.

In future product development, mechanical design will no longer be a separate stage, but a cross-cutting aspect that will accompany the product throughout its life cycle – from concept to recycling.

Several specialised technologies are used to move heavy industrial machinery, such as hydraulic lifting systems, air cushions, skid steers, special cranes and customised transfer vehicles. Each method is suitable for specific situations, depending on the weight of the machine, the distance to be moved, the space available and the load-bearing capacity of the floor. Expert implementation ensures a safe and cost-effective outcome.

What methods are used when moving heavy machinery in an industrial environment?

Moving heavy industrial equipment requires specialised skills and the right tools. Hydraulic lifting systems are the most common solutions when precise control and high lifting capacity are required. These systems allow precise lifting and moving of machines weighing up to hundreds of tonnes.

Air cushion technology is particularly useful in confined spaces, as it reduces friction and allows heavy machinery to be moved with little force. Air cushions work most effectively on flat and smooth surfaces, and their use usually requires professional guidance.

Roller conveyor systems are cost-effective solutions suitable for many industrial environments. Various types of industrial cranes, such as overhead cranes and mobile cranes, are indispensable in many transfer projects. Specialised vehicles, such as low-loaders and modular transport vehicles, are often required when moving machinery over longer distances.

At Hefmec, we design and deliver tailor-made solutions for the transport of even the heaviest industrial machinery. Our services include method design, supply of the necessary transfer equipment and installation supervision to ensure a safe and efficient transfer process.

How to ensure the safety of machinery movements in an industrial environment?

Safety is an absolute priority for machine transports. Careful planning and risk assessment are fundamental to a successful transfer operation. A detailed safety plan must be drawn up before the transfer starts, taking into account the weight of the machine, the transfer route and the potential risks.

Proper training of workers is the cornerstone of safety. All persons involved in the transfer must have the appropriate qualifications and knowledge of the equipment used. Proper personal protective equipment such as helmets, safety shoes and safety vests are essential throughout the transfer operation.

Compliance with regulatory requirements is an important part of ensuring safety. Moving heavy machinery must comply with occupational safety legislation and sector-specific safety standards. The transfer plan should define clear responsibilities and communication methods.

In Hefmec’s machine transfer services, security is integrated at every stage. We adhere to strict safety standards and continuously improve our procedures. We use CE-marked equipment and draw up detailed safety instructions to ensure the safety of both workers and machinery during transfers.

What are the maintenance services Hefmec offers for industrial machinery?

We offer a comprehensive range of maintenance services to keep your industrial machinery in optimal working order. Our predictive maintenance services include regular inspections and servicing to prevent potential failures and minimise production downtime.

Maintenance plans are tailored to the customer’s needs. Scheduled maintenance is carried out in a flexible manner that causes the least possible disruption to production. Our fault repair services respond quickly to problems and our skilled fitters ensure that machines are back up and running quickly.

Our modernisation services help you upgrade even old machines to meet modern efficiency and safety requirements. Our remote monitoring solutions allow us to monitor machine operation in real time and anticipate maintenance needs before they cause production downtime.

Our diagnostic services use modern measurement methods to accurately determine the condition of your machinery. All our maintenance services are designed to maximise machine utilisation and minimise unexpected downtime, supporting our customers’ business continuity.

How do maintenance services affect the life cycle of industrial machinery?

Regular maintenance and servicing are key to extending the life of industrial machinery. Properly maintained machinery can operate reliably for decades, while neglected maintenance can significantly shorten the life cycle and lead to costly repairs or premature replacement investments.

Reliability of operation will be significantly improved through planned maintenance. When machines operate reliably, production downtime is reduced and productivity is increased. Life cycle cost optimisation is possible when maintenance is correctly timed and carried out professionally.

Hefmec’s maintenance strategy is based on a proactive approach. We identify potential problems early and fix them before they cause more serious damage. This approach has proven to be cost-effective in many of our customer projects.

One of our customers in the paper and pulp industry has managed to extend the life of their production line machinery by more than 30% by using our maintenance services. Another customer in the metal industry has reported a 45% reduction in production downtime after implementing a systematic maintenance programme.

When should you outsource your machinery moving and maintenance services to a specialist company?

The need for specialised skills is one of the main reasons for outsourcing machinery handling and maintenance services. The removal and maintenance of heavy industrial machinery involves specialised tasks requiring specific skills and experience. Outsourcing allows this expertise to be utilised without having to train in-house staff.

Optimising resources is another important aspect. By outsourcing transmission and maintenance services, a company can focus on its core business and reallocate its resources to more productive activities. Responsibility issues are clarified when a specialised company takes overall responsibility for the transfer and maintenance operations.

Cost-effectiveness is often a decisive factor in the decision to outsource. Moves and maintenance carried out as an outsourced service are usually cheaper than those carried out in-house, especially when the costs of purchasing and maintaining equipment and training staff are taken into account.

Hefmec’s services cover the entire life cycle of a machine, from design to decommissioning. We offer comprehensive solutions that ensure optimal machine performance and maximise machine lifetime. Our customers can rely on their machines to operate reliably and safely under our professional care.

Ensuring structural durability is a key part of successful product design. Professional strength calculations determine the durability of products under different operating conditions, enabling optimal material choices, extending product life and ensuring safety. Modern calculation methods, such as FEM analysis, provide accurate information on the behaviour of structures even before the first prototype is built, saving time and resources in the product development process.

What does strength calculation mean in product design?

Strength calculation is the cornerstone of product design, where mathematical methods are used to determine the durability of materials and structures under different loading conditions. It is a predictive process that simulates the forces applied to a product, such as tension, compression, bending and vibration, to ensure the durability of a structure throughout its design life.

Modern engineering design makes particular use of Finite Element Method (FEM) analysis, which breaks down a complex structure into smaller, more easily analysable parts. This allows accurate structural analyses to be carried out even for complex geometries. In specialist organisations such as Hefmec, FEM analysis is used on a daily basis to optimise different product structures.

The role of mathematical models in assessing the structural integrity of products is irreplaceable. They allow material properties, loads and boundary conditions to be combined into simulations that reveal potential weaknesses at the design table. This kind of sustainability analysis is a key element of innovative and responsible product design.

How does strength calculation improve product safety?

Ensuring product safety is one of the most important tasks in strength calculation. A thorough structural analysis allows us to identify critical points and potential failure mechanisms before they occur in real life. This preventive approach is the key to developing reliable and safe products.

Strength calculations allow modelling the behaviour of a product under different extreme conditions, such as:

• Abnormally high loads
• Varying temperatures
• Dynamic stress
• Fatiguing cyclical load

These analyses help to anticipate potential problems and improve product design before the product goes into production. For example, a durability analysis of a hook on a lifting device can reveal potential fracture points that can be corrected by design changes. In safety-critical applications, such as healthcare equipment or infrastructure solutions, a thorough strength calculation is often a legal requirement and an essential part of compliance demonstration.

When should strength calculation be used in the product development process?

Optimal timing of strength calculations in product development is essential to achieve maximum benefits. Ideally, strength calculations are integrated into the process from the concept phase, allowing the design direction to be determined on the basis of reliable analyses.

The stages of product development where strength calculations are particularly useful:

1. Concept phase: a preliminary structural analysis shows the concept works and reveals potential problem areas
2. Detailed design: accurate FEM analyses ensure the functionality of details
3. Prototype phase: computational results support physical tests
4. Industrialisation: assessing the impact of manufacturing methods and tolerances
5. Certification: documented calculations prove product compliance

By including strength calculations at the start of product development, costly and time-consuming corrections at later stages can be avoided. In Hefmec’s experience, early strength calculation can significantly shorten the product development cycle and improve the quality of the final product.

How does the strength calculation affect the cost-effectiveness of the product?

The impact of strength of trade calculation on cost-effectiveness is significant, although it is often overlooked. Accurate analysis can help optimise material usage, reduce the number of prototypes and shorten time to market – all factors that directly affect the total cost of a product.

Optimisation of materials is one of the clearest benefits. With the help of strength calculations, you can:

• Thins structures safely at non-critical points
• Reinforce only those areas subject to significant stresses
• Replace expensive materials with cheaper alternatives
• Reducing the overall amount of material without compromising on durability

In addition, when the behaviour of the product is known accurately thanks to computation, the need for physical prototypes can be reduced. This saves considerable time and money. Based on Hefmec’s project experience, strength calculation can reduce material costs by up to 15-30% and prototyping costs by 40-60%, making it a worthwhile investment in the product development process.

What are the most common errors in strength calculations?

To make effective use of strength-of-field calculations, you need to be aware of and avoid the typical pitfalls. The most common mistakes are unrealistic initial assumptions, inadequate boundary conditions and inaccuracies in material models, all of which can lead to misleading results.

Typical sources of error in strength calculations:

Type of error	Result	Avoidance
Unrealistic load situations	Underestimation of actual use	Thorough analysis of the operating environment
Insufficient framework conditions	Incorrect deformation behaviour	Accurate modelling of anchorage points
Simplified material models	Inaccurate behaviour prediction	Material testing with real materials
Over-simplification of geometry	Ignoring critical details	Appropriate model accuracy

Competent strength calculation requires both theoretical understanding and practical experience. Our approach at Hefmec is based on a thorough analysis to ensure that the calculation model reflects the real situation as accurately as possible. This minimises the risk of erroneous conclusions and maximises the added value of the strength calculation.

Static and dynamic strength calculations are two fundamentally different methods for assessing the durability of structures. Static strength calculation analyses structures subjected to stationary or slowly changing loads, while dynamic strength calculation takes into account time-dependent loads and the vibrations and shocks they cause. The difference is important for design, as dynamic loading can impose many times more stress on structures than static loading, requiring more sophisticated calculation methods and modelling.

What does strength calculation mean in modern mechanical engineering?

Strength calculation is the cornerstone of modern mechanical engineering, enabling the design of safe, durable and cost-effective structures. It is the process of using mathematical and computer-aided methods to ensure that structures can withstand the forces applied to them without fracturing, flexing excessively or fatiguing prematurely.

In modern mechanical engineering, strength calculations are no longer just simple hand calculations, but use advanced Finite Element Method (FEM) analysis to digitally model and simulate complex structures and their behaviour under different loading conditions. This allows design errors to be detected and corrected before prototyping, saving considerable time and resources.

The Hefmec approach sees strength calculation as an integral part of the overall design process. We have seamlessly integrated it into our product development chain, allowing us to optimise structures from the outset in terms of safety, durability and material efficiency. Our fast and efficient FEM analysis ensures that the design process runs smoothly and that solutions are technically and economically correct.

We use strength calculations to anticipate and eliminate potential problems at the design stage, which significantly speeds up the development process. This agile approach means that while others talk in months, we talk in days.

What is static strength calculation and when is it used?

Static strength calculation is a method of analysing structures subjected to unchanging or slowly changing loads. This method considers the equilibrium state of a structure, where forces and moments are constant and the effect of time need not be taken into account. Static strength calculation is used in situations where loads remain constant or change very slowly, such as in many basic industrial applications.

Typical applications of static calculation include:

• Sizing of industrial structures such as scaffolding, cranes and support structures
• Design of pressure equipment and tanks
• Sizing of frame structures for production equipment
• Fixed installations, mainly supporting a standard load
• Documentation of steel structures requiring CE marking

Hefmec uses static strength calculations especially for precision manufacturing technology projects. This includes the frame structures of heavy production equipment, industrial lifting equipment and the design of special tools. We use advanced FEM software to make modelling efficient and accurate.

Static strength calculations are particularly effective in situations where optimisation of structures is important for cost-effectiveness. The calculations allow us to ensure that a structure is strong enough to withstand the loads it is subjected to, while at the same time being as material efficient as possible. This leads to lower material costs and lighter structures.

We always carry out static strength calculations in a way that takes into account all relevant safety regulations and standards. This ensures that the designed structures meet all regulatory requirements and are safe to use throughout their life cycle.

How does dynamic strength calculation differ from static strength calculation?

Dynamic strength calculation differs fundamentally from static in that it takes into account the effect of time on the loads and the response of the structure. While static calculation considers the equilibrium state, dynamic calculation analyses time-dependent phenomena such as vibrations, shocks and wave movements in structures. This makes dynamic calculation much more complex and computationally demanding.

The main differences compared to static strength calculation are:

• Time dependence of loads: in dynamic calculation, loads can vary rapidly as a function of time
• Effect of mass and slowness: the mass and welding characteristics of a structure have a significant influence on its dynamic response
• Vibrations and resonance: dynamic calculation takes into account the natural frequencies and resonance phenomena of the structure
• Damping: the ability of materials and structures to damp vibrations is an essential factor
• Complexity of calculation models: dynamic analyses require more sophisticated numerical methods

Feature	Static strength calculation	Dynamic strength calculation
Nature of the load	Constant or slowly changing	Time-dependent, variable
Calculation methods	Simpler FEM analyses	Complex transient and vibration analyses
Phenomena to note	Tensions, transitions	Vibrations, shocks, resonance, fatigue
Need for computing resources	Moderate	High

Hefmec experts are proficient in both calculation methods and know how to choose the optimal approach for each situation. For dynamic strength calculations in particular, we use advanced software and modelling techniques that enable accurate analysis of complex dynamic phenomena.

Dynamic strength calculation is a key element of safety and reliability in modern mechanical engineering. We have a thorough understanding of dynamic phenomena and are able to take them into account in the design so that the end result is reliable and durable even under demanding dynamic loading conditions.

When is dynamic strength calculation needed?

Dynamic strength calculations are needed whenever a structure is subjected to rapidly changing loads or when the dynamic behaviour of the structure is critical to its performance. These situations are common in industry and the selection of the correct calculation method is crucial to ensure the safety and durability of the structure.

Typical situations where dynamic strength calculation is necessary:

• Rotating and vibrating machinery parts and equipment
• Mechanisms involving rapid movements, such as robots and automation devices
• Impact loading situations, such as presses and crushers
• Structures where there is a risk of fatigue due to repeated loading
• Structures subject to vibrations under operating conditions
• Equipment subject to vibration during transport

In industry, dynamic phenomena are present in almost all equipment that contains motion. For example, in machinery for the paper and pulp industry, mining equipment and process equipment for the metal industry, dynamic analysis is often a necessary part of the design process.

Hefmec provides customers with comprehensive dynamic analyses to help optimise the efficiency and safety of production processes. Our services include:

• Vibration and oscillation analyses to ensure the durability of equipment and minimise disruption to production
• Impact and impact analyses to determine the effects of momentary loads
• Fatigue analyses to estimate the lifetime of structures under cyclic loading
• Resonance studies to avoid the excitation of the structure’s characteristic frequencies in operational situations

Our dynamic analyses help our customers improve the quality, durability and safety of their products. They also allow us to optimise structures to make them lighter and more cost-effective without compromising their durability. This is particularly important in modern product development, where material efficiency and environmental friendliness are key.

How can Hefmec help you choose the right calculation method?

Hefmec’s approach to strength calculation is based on a holistic understanding of customer needs and application requirements. We do not simply perform the calculation, but help the customer to identify which calculation method – static or dynamic – is the most appropriate and cost-effective in each situation.

The process of selecting a calculation method always starts with a thorough discussion with the client. We identify the operating conditions, loading conditions and critical requirements of the structure. Based on this, our experts assess whether the situation is mainly static or whether there are significant dynamic components involved that require more advanced calculation.

When choosing the right calculation method, we take into account factors such as:

• Nature and variation of loads (constant loads vs. variable loads)
• The intended use of the structure and the operating environment
• Safety requirements and standards
• Economic factors and optimisation needs
• Project schedule and resources

Our agile operating model allows us to respond flexibly to customer needs. In many cases, we approach the problem in stages: starting with a simpler static analysis, which quickly gives a basic understanding of how the structure works, and, if necessary, deepening the analysis with a dynamic analysis at the most critical points.

The Hefmec team is made up of experienced professionals who are masters of both linear and non-linear strength calculations. We have the tools and know-how to solve any strength calculation problem, and we always take full responsibility for our work.

Our goal is to provide our customers with technically and economically sound solutions that will continue to improve productivity in the future. That is why we always choose the most appropriate calculation method for each situation, ensuring a reliable and safe result in a cost-effective way.

When you need help choosing the right strength calculation method or want to ensure the durability of your structure, Hefmec experts are ready to help. Contact us and tell us about your needs – together we will find the best solution for your specific case!

The strength calculation of industrial structures is a critical safety factor to ensure the durability of structures under all operating conditions. Correctly performed strength calculations prevent structural damage, optimise the use of materials and extend the life of industrial equipment. It is an investment that pays for itself in improved safety, reliability and cost-effectiveness. At Hefmec, strength calculation is a key part of the design process, where we use FEM analysis to ensure the safety of structures from the very beginning of the design process.

Why is strength calculation important for industrial structures?

Strength calculations for industrial structures are important because they form the basis for safe and reliable industrial operations. Strength calculation ensures that structures can withstand the loads and stresses placed on them without damage or failure. This is vital both for the safety of workers and for the continuity of production.

Accurate strength calculations allow optimal sizing of structures – not too heavy and costly oversizing, but strong enough to withstand all operating conditions. Hefmec’s strength calculation services cover all stages of a project from initial analysis to the finished structure.

In industry, the strength calculation also has a direct impact:

• The lifetime of equipment and machinery
• Forecasting maintenance needs and costs
• Reliability and continuity of production
• Product liability and insurance issues

Professional strength calculation is particularly important in projects where structures are required to have exceptional durability or are subjected to demanding conditions. By using Hefmec’s fast and efficient FEM analysis, we ensure the durability of structures from the earliest design stage, speeding up the entire design process.

How does strength calculation affect the safety of industrial structures?

Strength calculation is the cornerstone of safety in industrial structures, as it ensures that structures can withstand the forces they are subjected to in all operating conditions. Proper strength calculation reveals potential weaknesses and critical points in structures at the design stage so that they can be corrected before manufacture and commissioning.

From a safety point of view, strength calculation:

• Identify potential fatigue fracture points
• Simulate extreme load situations
• Determine the safety factors of the structure
• Assess the suitability of materials for the application

The responsible approach of the Hefmec strength calculation team is reflected in accurate analyses that effectively prevent structural damage. We offer a lifetime guarantee on many of our products, which reflects our confidence in our calculation methods and implementation. This is possible because we have a thorough understanding of the behaviour and performance of structures under different loading conditions.

Non-linear analysis is one of our tools to study the behaviour of structures under extreme conditions. This is particularly important in situations where structures are subjected to repeated loading, high temperatures or other demanding environmental factors.

Safety factor	Effect of strength calculation
Durability of the structure	Ensures the durability of structures under all load conditions
Prevention of fatigue fractures	Identify critical points and size them correctly
Safety at work	Reducing the risk of accidents and equipment damage
Service life management	Enables proactive maintenance and lifecycle management of structures

What specific skills are required for strength calculations in industrial structures?

Strength calculations for industrial structures require a wide range of technical skills and experience. A strong theoretical background in mechanics, materials engineering and structural analysis is essential, but practical experience in real industrial environments is also essential.

Hefmec’s strength calculation team consists of experienced engineers and graduate engineers with both theoretical knowledge and practical experience in demanding strength calculation projects. Our expertise covers both linear and non-linear strength calculation methods.

Key areas of expertise in strength of materials calculations include:

• FEM (Finite Element Method) analysis – an elementary method that allows accurate modelling of complex structures
• Analysis of dynamic loads
• Knowledge of the behaviour of materials in different conditions
• Managing standards and regulations (such as Eurocode)
• Skills in using specialised software and interpreting results

At Hefmec, we use modern analytical tools to ensure speed and accuracy in our calculations. With fast and efficient FEM analysis, the safety of the structure is ensured from the very beginning of the design process, significantly speeding up the overall design process.

The complexity of industrial structures also requires the ability to identify the essential factors that influence the functioning of the structure. This requires a broad understanding of industrial processes and the demands they place on structures. Hefmec’s experts have a wealth of experience in different industrial sectors, enabling them to find optimal solutions for the needs of different industries.

How can strength calculation help optimise production costs?

Strength calculation is a cost-effective way to ensure cost-efficiency in industrial structures. Accurate calculations allow optimisation of material use: structures are sized just right for their intended use, avoiding both costly oversizing and risky undersizing.

There are several ways in which the strength calculation contributes to cost optimisation:

• Reducing material costs with the right sizing
• Improving manufacturing efficiency with optimised structures
• Improving energy efficiency through lighter but strong structural solutions
• Minimising maintenance and repair needs with durable structures
• Extending service life with properly sized components

Hefmec’s strength calculation services deliver solutions that are both technically and economically correct. We critically analyse each structure and component to ensure that they meet the specified requirements in the most cost-effective way.

In the long term, the biggest savings are made by avoiding design flaws and structural damage that could cause costly production downtime. One day of production downtime can cost more than a full strength calculation. Therefore, an accurate strength calculation is a worthwhile investment that pays for itself many times over.

Using Hefmec’s fast and efficient FEM analysis, we ensure that structures are both safe and economically optimised. In practice, this means that structures are not unnecessarily rigid, but still withstand all the stresses they are subjected to. This balance is the key to cost-effectiveness.

What are the benefits of outsourcing strength calculations to experts?

Outsourcing the calculation of strengths to experts offers significant advantages for companies that want to focus on their core competences. By putting strength calculation in the hands of specialised professionals, a company can benefit from cutting-edge expertise without the need to invest in in-house calculation staff and expensive software.

The key benefits of outsourcing are:

• Access to specialist knowledge and up-to-date information on industry best practice
• Cost-effectiveness – you only pay for the service you need
• Freeing up resources for core business activities
• A broader perspective on problems through specialised expertise
• Up-to-date information on standards and regulations

Hefmec’s agile working methods and open culture deliver solutions to customers quickly. While others talk about months, we talk about days. This time saving is often crucial to the overall project schedule.

We have the capability to start a strength calculation at short notice and provide expert resources when you need them. We draw on a wide range of in-house expertise to ensure accurate and reliable structural analysis.

By outsourcing strength calculation to Hefmec, our customers get:

• Clear and comprehensive reports to facilitate decision-making
• Recommendations for modifications or, if necessary, redesign of the structure to meet the requirements
• Documentation that meets the requirements of the authorities and CE marking
• Assurance that structures are both safe and cost-effective

Hefmec’s strength calculation team is made up of experienced technical professionals with solid practical experience combined with in-depth theoretical knowledge. Our team is proficient in both linear and non-linear strength calculations, and they use the necessary analytical tools to accurately analyse complex structures.

Outsourcing your strength calculation also allows you to be flexible with your resources – you get the specialist expertise you need, when you need it, without long-term commitments. This is particularly valuable for project-based work or situations where calculations are only needed occasionally.

Yes, strength calculation can significantly reduce material costs in industrial projects. With accurate calculations, material use can be optimised so that structures are still safe and durable, but no excess material is used. This leads to direct savings in raw material costs, lighter structures and often better functionality. Professionally performed strength calculations allow accurate sizing of materials to actual loads, which can lead to material cost savings of up to 10-30%, depending on the type of project.

What is strength calculation and how does it affect the use of materials?

Strength calculation is an engineering method used to determine the ability of materials and structures to withstand the forces and loads applied to them. It can be used to model and analyse the behaviour of products, machines and structures under different conditions and loads without the need for expensive and time-consuming physical prototypes.

In modern industrial design, strength calculations are a key tool for the optimal use of materials. Traditionally, structures are often over-designed for safety, leading to excess material usage and higher costs. Accurate calculations can help determine how much material is actually needed for a structure to meet its requirements.

Hefmec’s strength calculation services are based on advanced Finite Element Method ( FEM) analysis to simulate different loading conditions and identify critical points in structures. We use both linear and non-linear calculations depending on the requirements of the situation. This comprehensive approach ensures that we can find optimal solutions to different design challenges.

Strength calculation is particularly important in product development and production, as it:

• Identify critical areas in structures at an early stage of design
• Minimise the use of excess material
• Improves product reliability and durability
• Speed up the design process by reducing the need for multiple prototypes

How can strength calculation concretely reduce material costs?

Strength calculation reduces material costs in several concrete ways. Firstly, material optimisation through strength calculation allows structures to be designed to exactly match their actual loads. This reduces the use of excess material, which is directly reflected in raw material costs.

Hefmec experts take a systematic approach to materials optimisation. First, we analyse the current performance of the structure and identify areas where material is being used unnecessarily. We then develop optimised solutions that reduce material use without compromising reliability or safety.

As practical tools, we use advanced simulation methods such as:

• Topological optimisation – removing material where it is not needed
• Load path analysis – identify how forces are distributed in a structure
• Comparing materials – find the most cost-effective material options
• Structural analysis – examines the impact of different structural solutions on costs

A particularly effective tool is the fast and efficient FEM analysis method developed by Hefmec, which we use to ensure the safety and durability of structures right from the design stage. This speeds up the design process and allows us to carry out more rounds of optimisation within the time constraints.

The optimisation of materials is also reflected in the life cycle of the product. Lighter structures require less energy for transport and use, which results in additional savings in the long term.

Which projects will benefit most from strength calculations in terms of cost savings?

The most significant cost savings are achieved in projects where material costs are a large part of the total cost or where production volumes are high. Each kilogram of material saved is multiplied in large batches and can lead to significant overall savings.

Especially in the following projects, the strength calculation has proven to be valuable in terms of cost savings:

• Design of heavy industrial machinery and equipment
• Lifting and load handling equipment
• Production lines containing metal structures
• Transport equipment where weight reduction improves energy efficiency
• Industrial robotics and automation solutions
• Special machinery and equipment for demanding environments

In projects carried out by Hefmec, we have seen how strength calculations can help to achieve significant material savings. Particularly in demanding mechanical engineering projects, where massive structures have traditionally been used for safety reasons, we have been able to use accurate analysis to identify and remove excess materials while maintaining the durability of the structure.

In industrial maintenance projects, strength calculations also help to map the actual condition and remaining service life of structures, allowing more accurate maintenance and repair planning. This often leads to a situation where expensive components can be used for longer or only partially replaced, resulting in significant savings.

What are the long-term benefits of strength-based material optimisation?

The long-term benefits of strength-based material optimisation go far beyond immediate cost savings. The key benefit is cost-effectiveness throughout the product life cycle, not just at the manufacturing stage.

In the long term, optimised use of materials will bring the following benefits:

• Lower environmental impact thanks to reduced use of raw materials and lighter structures
• Energy savings in transport and use as products are lighter
• Improved competitiveness in the market thanks to lower production costs
• Improved product durability when structures are optimised for their actual operating conditions
• Reduced material wastage in production and lower storage costs

Hefmec’s solutions are designed to improve our customers’ productivity for the future. We create solutions that not only meet today’s needs, but also take into account future requirements and possible changes in the business environment.

It is particularly important to note that a properly performed strength calculation supports the reliability of products. When structures are correctly dimensioned, their durability is improved and the need for maintenance is reduced. This is directly reflected in reliability and reduced life cycle costs.

The risks of rising raw material prices are also reduced when materials are used optimally. This gives companies financial stability and improves their ability to predict future costs more accurately.

In addition, optimised structures often allow for more innovative solutions that can provide a competitive advantage in the market. Making a product lighter, more durable and cheaper to manufacture opens up new opportunities in both product development and marketing.

Strength calculation should be integrated into the product development process as early as possible, ideally at the concept stage. Early strength calculations help to identify structural problems before designs get too far ahead, saving significant time and resources. Properly carried out strength calculations ensure that the product is both safe and cost-effective. Hefmec’s experienced professionals provide accurate and reliable strength calculations at all stages of product development, ensuring optimal solutions for every project.

Why is strength calculation a critical part of product development?

Strength calculation is a vital element in product development, ensuring the durability, safety and reliability of the structures designed. Without proper strength calculations, products can fail in service, cause hazardous situations or lead to costly warranty repairs and reputational damage.

The mechanical resistance of a product is a fundamental quality factor, especially in mechanical engineering and technical design. Strength calculations ensure that structures can withstand the forces and stresses to which they are subjected throughout their design life. This is particularly important in safety-critical applications where failure of a structure can have serious consequences.

The Hefmec engineering team specialises in solving demanding manufacturing engineering problems using advanced strength calculation methods. Our experience covers a wide range of industries where durability and safety are key. Our experienced professionals – engineers and graduate engineers – combine in-depth theoretical knowledge with practical experience to provide reliable solutions for the most demanding mechanical engineering projects.

In modern product development, strength calculations also help to optimise the use of materials, leading to more durable and cost-effective products. We can use calculations to minimise the amount of material used without compromising product reliability or safety. Such accurate sizing is an essential part of a responsible and economically sound design process.

At what stage of product development should the strength calculation start?

Strength calculations should start as early as possible in the product development process, preferably at the concept stage. Early integration allows potential structural problems to be identified and solved before the design process has progressed too far, making changes much more costly and time-consuming.

Preliminary strength calculations carried out at the design stage help to assess the performance and durability of different structural solutions. This guides design decisions towards optimal solutions from the outset. As the design progresses, the strength calculations are refined and extended to cover increasingly detailed structural considerations.

Hefmec’s approach emphasises the integration of strength calculations at every stage of product development. Our agile working methods allow us to start strength calculations at short notice, providing expert resources exactly when you need them. This significantly speeds up the product development process, as potential problems are quickly identified and solved.

Although strength calculations should be started as early as possible, they are also useful in the later stages of product development. Accurate analysis during the prototyping phase can reveal unexpected stress concentrations or other structural weaknesses that can be corrected before the product is launched. This iterative approach ensures that the final product is both safe and cost-effective.

Strength calculation is also an essential part of the CE marking process, which requires documented evidence of product safety. Hefmec experts help customers meet these requirements by providing in-depth strength calculations and comprehensive CE documentation.

What different strength calculation methods can be used in product development?

Product development can make use of a number of different strength calculation methods, of which Finite Element Method (FEM) analysis is currently one of the most widely used and effective tools for analysing complex structures. The choice of method depends on the complexity of the product, the requirements for analytical accuracy and the time and resources available.

FEM analysis allows complex structures to be modelled and analysed by computer. In this method, the structure is divided into small elements whose behaviour can be simulated under different loading conditions. Hefmec experts use advanced FEM tools to perform both linear and non-linear analyses. With fast and efficient FEM analysis, we ensure the safety and durability of structures from the very beginning of the design process.

Analytical calculation is another important method, based on mathematical formulae and the fundamentals of materials science. This method is particularly suitable for simpler structures and preliminary calculations. The advantage of analytical calculation is its speed and straightforwardness, which allows it to be used effectively in the early stages of product development.

Practical testing complements computational methods by providing concrete data on the actual behaviour of prototypes and finished products. Testing can be used to validate computational models and ensure that they match reality. Hefmec experts can interpret the test results and apply them to refine computational models.

Dynamic analysis is essential for products that are subjected to varying loads, vibrations or impacts. This method can be used, for example, to model resonance phenomena and fatigue loads, which are critical in many mechanical engineering applications.

The Hefmec strength calculation team is proficient in all these methods and can choose the most appropriate approach for each situation. We combine different methods as required, enabling accurate and reliable analyses of even the most complex structures. Our experts communicate the results clearly and offer concrete recommendations for modifications or redesign the structure to meet the requirements.

How does the strength calculation affect the final cost of the product?

A properly carried out strength calculation has a significant impact on the final cost of the product, in most cases reducing the overall cost significantly. Although the strength calculation itself is an investment, the benefits are reflected in savings on materials, manufacturing and maintenance throughout the life cycle of the product.

Optimisation of materials is one of the key economic benefits of strength calculation. Accurate analysis allows structures to be sized just right – neither too stiff nor too weak. This reduces material costs and makes structures lighter, which can bring significant savings, especially in mass production. Hefmec experts know how to optimise structures in a technically and economically sound way.

Avoiding oversizing is particularly important in projects where cost pressures are high. Without accurate strength calculations, designers are often forced to oversize structures to be on the safe side, leading to unnecessary material and manufacturing costs. Accurate calculations can help determine the optimum structure that meets all requirements without additional costs.

Extending the life cycle of a product is a major source of cost savings. When properly sized, structures last longer and require less maintenance. This reduces lifecycle costs and improves customer satisfaction. Hefmec’s goal is always to deliver solutions that will continue to improve productivity in the future.

Minimising warranty costs is a direct consequence of reliable strength calculations. Once a product has been thoroughly analysed and tested, the risk of structural failure in service is significantly reduced. This reduces the costs associated with warranty repairs and product liability and protects the company’s reputation. Hefmec’s strong expertise allows it to offer a lifetime warranty on many of its products.

Faster market access is also a major economic benefit. Efficient strength calculation reduces the number of prototypes and speeds up the product development process. When agile players like Hefmec talk in days while others talk in months, this time saving means faster time to revenue and a competitive advantage in the market.

What are the benefits of a timely strength calculation?

Timely strength calculations provide a number of significant benefits, the most important of which is the prevention of design errors. By integrating strength calculation into the product development process from the outset, potential problems are identified and resolved before they cause costly delays or the need for redesign.

Reducing product development time is one of the key benefits of timely strength calculations. When structural analyses are carried out early in the design process, time-consuming subsequent repairs and modifications are avoided. Hefmec’s agile working methods and open culture allow for rapid implementation of strength calculations, speeding up the entire product development process. While others talk about months, we talk about days.

Enabling innovative solutions is another important benefit. A thorough strength calculation helps to identify which innovative solutions are feasible and which are not. This encourages creative problem solving and enables safe testing of novel approaches. Hefmec’s experts are able to solve the most demanding industrial production problems and apply the latest methods.

Achieving a competitive advantage in the market is based on the certainty of product quality and durability that strength calculations provide. Once a product has been thoroughly analysed and tested, its reliability and durability will set it apart from the competition. Hefmec customers can be confident that their products are technically and economically correct.

The optimal strength calculation process starts from the early stages of a project and continues throughout the product development. This process includes the following steps:

1. Requirements definition and load mapping
2. Preliminary strength calculation at the concept stage
3. More detailed FEM analysis as the design progresses
4. Prototype testing and calculation validation
5. Final analysis and documentation

The Hefmec strength calculation team is made up of experienced professionals who are masters of both linear and non-linear strength calculations. Our team draws on a wide range of in-house expertise to ensure accurate and reliable structural analysis. This enables us to deliver optimal and cost-effective solutions to our clients’ needs quickly and reliably.

By combining timely strength calculations with our agile working methods, we can offer our customers unparalleled certainty and safety. When Hefmec takes on a project, the customer can rely on us to take full responsibility for our work and deliver solutions that are both technically and economically optimised.