考虑附加结构的结构动力修改

Structural Dynamic Modification with Additional Structure

本文分析了实际工程中可能出现的一些情况,提出了一种运用Rayleigh-Rjtz技术,结合模态综合方法的结构动力修改方案。文中采用相容位移函数代替结构主模态,并给出了相应的结构模态变换式和系统方程式。

In this paper, some engineering cases have been considered, and a method of structural dynamic modification has been proposed by using Rayleigh-Ritz technique and component modal synthesis technique. The compatible displacement function has been used to substitute the normal modes in initial structure and additional structure. The formula of transforming matrix in structures and the synthesized equations of motion are presented. A example is given at the end.