Strength calculations are a key part of the engineering work that ensures the durability and safety of structures. At Hefmec, we understand that applying the principles of strength calculation through practical examples helps professionals understand the practices behind the theory. In this article, we will walk through concrete strength calculation examples that shed light on the different steps of the calculation process.
What is a strength calculation?
Strength calculation is a method of assessing the ability of structures to withstand various loads without damage or degradation. The calculation takes into account the properties of materials, the magnitude and direction of loads and the geometry of the structure. The aim is to ensure that the structure can safely withstand the design loads throughout its service life.
Standardised formulas and methods are often used for strength calculations, but each project also requires an individual approach. Hefmec’s engineering team provides equipment procurement solutions that include strength calculation services, ensuring that our customers’ equipment is durable and reliable.
Example 1: Bending a beam
One of the most common examples of strength calculation is the calculation of the bending moment of a beam. In this example, a concentrated load is applied to the beam and the objective is to determine the beam deflection and stresses. The calculation uses the modulus of elasticity of the material, the moment of inertia of the cross-section and the magnitude of the load.
This calculation is an essential part of the mechanical design process, where our experts share tips on how to optimise structures. Calculating the bending moment of a beam helps designers understand how different materials and designs affect the durability of a structure.
Example 2: Axle torsion
Another example of a strength calculation is the calculation of shaft torque. In this case, a torsional load is applied to the axle, causing stresses in the axle. The calculation takes into account the material of the shaft, the shape of the cross-section and the magnitude of the load. The calculation of the torque is critical, for example in power transmission systems.
Example 3: Analysis of plates and shell structures
The strength calculation of plate and shell structures is a more complex example, considering large surfaces that can be subjected to a wide range of loads. Numerical methods, such as the finite element method (FEM), are often used for the calculation, allowing accurate analyses of complex geometries and loading conditions.
Hefmec’s strength calculation services include comprehensive analysis to help our customers understand how their structures behave under different conditions. We provide accountability and efficiency in all our projects, ensuring that the end result is safe and reliable.
Example 4: Dynamic load
Dynamic loading is another challenging area of strength calculation, where structures are subjected to variable loads such as shocks or vibrations. Here it is important to take into account the fatigue phenomena and possible resonance problems caused by the load.
At Hefmec, we use advanced calculation methods and simulation software to help predict the effects of dynamic loading. This allows us to design for practical conditions and prolong the life of structures.
Hefmec’s expert services
Structural analysis is a versatile field that requires a deep understanding of materials, loads and the behaviour of structures. Our examples are just a snapshot of what strength calculus involves. Hefmec’s experts are ready to help with any strength calculation challenge, providing solutions to industry challenges and ensuring that our customers’ projects are sustainable and safe.
Contact us
If you would like more information or assistance with your strength calculation projects, you can contact the Principal Designer for Strength Calculation. Contact details can be found here.
