On May 16, 2018 I will present our new approach to FEA atNAFEMS, the International Association for Engineering Modelling, Analysis and Simulation Community.
In the finite element modelling of large mechanical assemblies, composite contacts are often used to connect many individually cross-linked parts. This has the advantage that individual geometries can be networked more easily. On the other hand, the number of contacts increases to several hundreds, if not thousands. This makes it difficult to check the model for correctness. In addition, design changes involve a relatively large amount of effort.
A new, component- and assembly-oriented approach opens up new possibilities in the FE modeling of large mechanical assemblies. FE models can be structured hierarchically into assemblies and sub-assemblies. When using CAD imports, the original model structure can be adopted. Changes to the model can be made locally in a subassembly. The testing of the contacts can accordingly be reduced to just a few modules.
The new approach makes it easy to reuse existing FE models and other assemblies. Easily reusable, the next logical step is to use a finite element model library of standard components.
The advantages of the new approach are demonstrated by examples from mechanical engineering (machine tools and their components).