修改结构之特征向量导数的省时计算法——双重摄动法

A Feasible Calculative Method of Saving Calculation Time for Eigenvector Derivatives of Modified Structures

文中初次探讨了修改结构之特征向量导数的省时计算可能性，并给出两种算法（统称为双重摄动法），其精度达到工程要求。另外。

The possibility for saving calculation time of eigenvector derivatives of modified structures is addressed, and both perturbation algorithm and perturbation simplified algorithm are proposed in this paper. They are called “dual perturbation method”. The precision of the perturbation algorithm is better and satisfies the requirements in engineering. In addition, the present method can be applied to the case in which the range of modification can be arbitrary.