计算结构瞬态响应的一个新方法(英文)

A NEW COMPUTATION METHOD FOR TRANSIENT STRUCTURAL RESPONSE

本文不用直接积分法而采用频域法研究结构瞬态响应问题,将有限元—里卡提传递矩阵组合法结合快速富里叶变换从特征值分析扩展到领域的结构瞬态响应分析.数值例子表明本文的方法比直接积分法有更好的计算精度.

This paper deals with the transient structural response problems- An alternative to direct integration techniques of transforming the equations of motion into the frequency domain is used. In this paper, the application of finite element - Riccati transfer matrix method is extended from eigen valus analysis of structures to the transient structural response analysis in frequency domain. In combination with Fast Fourier transform, the finite element - Riccati transfer matrix method in frequency domain can be used to obtain the transient respones of structures, Some numerical examples are proposed and their results are compared with those obtained by direct integration method.