自适应结构频率和阻尼比的计算  

Computation of Frequencies and Damping Ratios for Adaptive Structures

作　　者：张连文[1,2] 夏人伟[1,2] 曾广武[1,2] 

机构地区：[1]华中理工大学交通学院船舶设计室 [2]北京航空航天大学宇航学院

出　　处：《应用数学和力学》1999年第6期647-653,共7页Applied Mathematics and Mechanics

基　　金：国家863基金

摘　　要：本文给出状态空间法的一种新技巧，用于求解自适应结构的振动频率和阻尼比·当采用集中质量法时，状态矩阵的Ｃｈｏｌｅｓｋｙ分解具有解析式·从而既可提高计算精度，又可节约计算时间·最后以算例加以说明·In this paper, a new technique of state vector approach to solving damping ratios of adaptive structures is proposed, by which the state matrix can be analytically conducted the Cholesky decomposition, providing that the mass matrix is derived by lumped method. In this case, not only the computational accuracy is raised,but also the numerical operations are reduced. Finally,some numerical results are presented to show that the solution method is simple and efficient.

关 键 词：自适应结构 状态空间法 阻尼比 振动频率 

分 类 号：O327[理学—一般力学与力学基础] V414.33[理学—力学]