非比例阻尼结构特征向量灵敏度的高精度级数展开法

详细信息

AN ACCURATE SERIES EXPANSION METHOD FOR CALCULATING EIGENVECTOR SENSITIVITY OF NON PROPOTIONAL VISCO-DAMPING STRUCTURES

摘要: 本文用低阶模态和系统矩阵表达高阶模态对非比例阻尼结构特征向量灵敏度的贡献。提出非比例阻尼结构特征向量灵敏度计算的高精度级数展开方法,提高计算精度。文中的算例表明本文方法的有效性和正确性。
- 阻尼结构 /
- 灵敏度 /
- 模态展开法 /
- 级数展开
Abstract: The contribution of high-frequency modes to eigenvector sendtivity of non proportional visco-damping strictures is expressed by the low-frequency modes and the system matrixes. An accurate series expansion method for calculating eigenvector sensitivity of non proportional visco-damping structures is established in which the calculation preciaion is improved greatly. Numerical examples Show that the method is correct and efficient.
- visco-damping structure /
- sensitivity /
- modal superposition method /
- series expansion method