The finite element method (FEM) is a numerical technique to obtain approximate solutions to a wide variety of engineering problems. The FEM equations are solved by means of algebraic, differential, and integral equations. FEM models engineering problems from simple cantilever beams to blood vessel mechanics. CAD and CAE use finite element analysis (FEA) methods to solve and model the entire spectrum of engineering design. Finite element programs, such as ANSYS and NASTRAN, provide an interface to develop either quick strength stress calculations or complex assemblies analysis for interacting components.
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