基于降阶模型的非经典阻尼结构拓扑修改的复模态重分析方法

何建军;姜节胜

振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 50-54.

PDF(255 KB)
PDF(255 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 50-54.
论文

基于降阶模型的非经典阻尼结构拓扑修改的复模态重分析方法

  • 何建军,姜节胜
作者信息 +

Complex mode reanalysis method for topological modification of non-classical damping structure based on reduced model

  • He Jian-jun, Jiang Jie-sheng
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摘要

摘要:对非经典阻尼结构自由度增加的拓扑修改重分析问题,提出了一种近似方法。这一方法基于初始结构和拓扑修改结构的降阶模型,采用动力缩聚和复矩阵奇异值分解两个步骤,然后结合瑞利商逆迭代法来求解。数值算例结果表明:该方法具有较高的精度,且效率高。

Abstract

Abstract: The paper presents an approximate method for reanalysis of topological modification of non-classical damping structure with added degrees of freedom (DOF). The method,which is based on reduced model of original and topological structures, is followed by introducing dynamic condensation and singular value decomposition of complex matrix, and then combining the Rayleigh quotient inverse iteration method to obtain the final results. The results of numerical examples show that the suggested method can provide good approximation solutions with high precision, and it is very effective and feasible.

关键词

非经典阻尼 / 拓扑修改 / 奇异值分解

Key words

non-classical damping / topological modification / singular value decomposition

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导出引用
何建军;姜节胜. 基于降阶模型的非经典阻尼结构拓扑修改的复模态重分析方法[J]. 振动与冲击, 2009, 28(7): 50-54
He Jian-jun;Jiang Jie-sheng. Complex mode reanalysis method for topological modification of non-classical damping structure based on reduced model[J]. Journal of Vibration and Shock, 2009, 28(7): 50-54

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