动力模型修正中逆特征值问题的数值解法

本文提出了一种参数型动力模型修正的方法．因为这种方法与经典的逆特征值问题的提法是一致的，所以先建立起与逆问题等价的关于设计参数的非线性方程组，然后构造出可以用Ｎｅｗｔｏｗ法求解的格式．数值仿真结果表明本文方法具有较好的收敛性和较高的计算精度．

Numerical solution of inverse eigenvalue problem in dynamics model updating

A parameter-type method of updating the finite element dynamics model is presented inthis paper. Because this method consists with The classical inverse eigenvalue problem,atfirst,the nonlinear equations which is equivalent to the inverse problem are conducted withrespect to design parameters,then the solvability pattern of Newton Method is described.This method,choosing the design parameters as the variables to be updated,makes updatedmodel keep original physics features and has clear engineer sense,The numerical simulatedexample has demonstrated the better charac-teristics of this method,which include the accu-racy,the convergence and the procedure.