特征灵敏度分析中参数μ的选择问题  

PROBLEMS FOR CHOOSING PARAMETER μ IN THE EIGEN-SENSITIVITY ANGLYSIS

作　　者：费勤发 王荣昌[1] 

机构地区：[1]上海城建学院,同济大学

出　　处：《振动与冲击》1995年第2期17-20,共4页Journal of Vibration and Shock

摘　　要：本文指出，对于重特征值λ０，即使在是对称阵的假设下，含μ的灵敏度方程的解也与μ无关；由数值计算稳定性所确定的μ值界限，需要知道异于λ０的特征值的信息，这与非模态展开法的策略有所背离。This paper points out that even if under assumption of symmetric matrix ψ1,MoZo for the repeated eigenvalue,the solution of sensitivity equation contained μ is independent of μ.The limits of μ values, which are determined by computing stability, require the knowledge of eigenvalue in formations different from λo; It violates the strategy of non-modal expansion technique.

关 键 词：特征灵敏度 求解参数 重特征值 

分 类 号：O327[理学—一般力学与力学基础]