结构动力计算中振型叠加法的进一步研究  

A FURTHER RESEARCH ON METHOD OF MODE-SUPERPOSITION IN STRUCTURAL DYNAMIC ANALYSIS

作　　者：林继德[1] 

机构地区：[1]河北建筑工程学院

出　　处：《工程力学》1992年第3期131-135,共5页Engineering Mechanics

摘　　要：计算结果表明,用一般的振型叠加法计算无质量处的位移是不正确的。为了解决这个问题,本文给出修正的振型叠加法.用该方法计算的结果完全符合问题的精确解。本文还给出了该方法的严格理论证明。Results of analysis reveal that the solution for the displacement at zero-mass point by using the conventional method of mode-superposition is not correct. In order to solve the problem, this paper presents the modified method of mode-superposition, by which we can reach the accurate solution. Furthermore, the strict theoretical testification of the modified mothod is given in this paper.

关 键 词：频率 振型叠加 振幅 结构振动 

分 类 号：O327[理学—一般力学与力学基础]