频率域中有限元素法的探讨

A TENTATIVE DISCUSSION ON THE FINITE ELEMENT METHOD IN THE FREQUENCY DOMAIN

本文指出了用拉普拉斯变换处理有限元方程和用富里叶变换所得到的结果是等价的。从物理方面讨论了频率域有限元的局限性。

So far many kinds of finite element methods in the frequency domain for solving the dynamic problem were studied. This paper points out that the Laplace transform version of the finite element method for solving the dynamic problem is equivalent to the Fourier transform method for the same puspose.But there are some limitations physically speaking and here proposes a way to imporve the solution. Finally, a model computation using the formula is shown.