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Finite element analysis ( Finite Element Analysis, FEA） It is a numerical analysis method widely used in engineering and scientific research. It is used to solve various problems, such as structural mechanics, heat conduction, fluid dynamics, etc., and can also be used for related technical analysis of wave springs. Simply put, finite element analysis discretizes a continuous problem and divides a continuous domain into a finite number of discrete, interconnected sub-domains, which we call ‘finite elements’. Then, mathematical methods are used to solve the problem of each subdomain, and finally the solution of the original continuous problem is obtained by integrating the solutions of all subdomains. The advantages of finite element analysis are: Can solve problems with complex shapes and boundary conditions. Can handle non-linear problems