Springs and connectors can be used to simulate joints, and so on. The FEA model can also include the use of spider elements and lumped mass elements, to represent components that do not need to be modeled in detail. This can include using 2D thin shell elements, to represent plate and shell type structures, and using 1D beam elements to represent beam-like sections of the structure. Idealization is a process where we take the 3D definition of the component, and change it to a more abstract representation. The actions that need to be taken on the CAD geometry are common across all five areas. They can be broken down into five main areas: There are a range of requirements that FEA exerts over the geometry. In this article I review some of these requirements, and hope to provide a basis for planning how to migrate the CAD model into a form ready for analysis Ī challenge with Finite Element Analysis (FEA), is that it now introduces a whole raft of new requirements which will affect the geometry. When you develop a design, and build a CAD model, one of the objectives is to ensure that it provides a very tight definition of the design intent of the component or assembly. The geometry starts in the CAD environment
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