摘要
本文讨论了复模态矩阵摄动法的几个重要问题,包括特征向量的正规条件,已有的复模态矩阵摄动法的不完善之处,特征向量一阶摄动的模态展开法和非模态展开法。上述讨论进一步完善了已有的复模态矩阵摄动法。
This paper discusses some important problems including the normalized conditions of eigenvectors, the shortcomings of the matrix perturhation of complex modes and the modal expansion and non-modal expansion of the first order perturbation. The matrix perturbation of Complex modes has been improved by the present discussions.
基金
国家自然科学基金资助项目
关键词
固有振动
复模态
矩阵摄动法
natural vibration, complex modes, normalized conditions, perturbation of eigensolutions