An FEA solver cannot easily work with irregular shapes, but it is much happier with common shapes like cubes.
A mesh is made up of elements which contain nodes (coordinate locations in space that can vary by element type) that represent the shape of the geometry. Meshing is one of the most important steps in performing an accurate simulation using FEA. FEA has matured and has been democratized so that it can be used both by design engineers and specialists. A general technique like FEA is a convenient method to represent complex behaviors by accurately capturing physical phenomena using partial differential equations. In several situations, product behavior in the real-world cannot be approximated by simple hand calculations. Finite element analysis (FEA) is a mathematical representation of a physical system comprising a part/assembly, material properties and boundary conditions.
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