Strength calculation – securing of function and product quality by finite element method
FEM analysis, the so-called Finite Element Method (FEM) or FEM calculation, is largely concerned with calculating the deformation of a structure under various loads and the resulting internal stresses. In this way, weak points in a construction can be found, calculated and visualized. Especially on the basis of an FEM calculation, optimization measures can be developed or the best design can be calculated automatically by means of topology optimization. In order to prove the strength of the construction, for example, strength verifications for connections and individual parts are also created in the context of the overall system. Such a strength calculation also provides the designer or development engineer with legal security. If this FEM analysis goes hand in hand with an adapted design solution for a product innovation, you will secure your product quality.
FEM analysis has become an integral part of product development in mechanical and plant engineering. Originally, product development using FEM analysis was limited to the automotive and aerospace sectors due to the infrastructure required for this. In the meantime, however, this is no longer a limitation, which means that numerical simulation can be used in all areas. Especially to save time and costs. With FEM analysis, weak points in the design can be detected in a targeted manner, so that improvements can be made before the first real test. During the strength calculations, the structural optimization of individual components is often also processed, so that material and costs can be saved while maintaining optimum component functionality. By applying FEM analyses, it is possible to test and validate only those prototypes that already show promising results in the simulation.
Failure hypotheses and optimization by FEM analysis
For a failure evaluation, the failure criteria are determined using the material model before the FEM calculation. In addition, the risk factors and acting loads are realistically represented and then applied digitally to the entire construction. This failure evaluation can also be carried out several times, for example for a one-time worst-case scenario or for a long-term use of a product.
Lightweight structures often have to withstand the required loads at minimum weight. The increasing cost pressure requires existing structures to be optimized for marketability. Structural optimization using FEM calculations can thus be used to achieve maximum component strength with minimum material expenditure (topology optimization).
- Extensive know-how in the field of materials (steel, plastics, ceramics, etc.) and material models by involving material scientists and databases.
- Thermal (static, transient)
- Mechanical (static, transient, dynamic, linear-elastic, plastic, creep)
- Interpretation of the results (instability, overload, fatigue, etc.)
- Verification and interpretation of the meaningfulness of the results and the FE-model by means of analytical reference calculation or measurements.
- Verification according to FKM guideline or other specified standards or guidelines.
- Evaluation of the design: actual situation and development of optimised design variants.
QUO takes a holistic view of its customers’ problems. QUO’s goal is to provide the customer with an understanding of the problem and to convey the findings from the calculations of the FEM analysis. And in such a way that these can also be incorporated into the customer’s upcoming designs. This will also result in profitable results in the future
QUO has already proven its competence in this area in various projects. Our experts are at your disposal for advice:
QUO supports its customers in product development by FEM analysis to achieve the best possible result.