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首页> 外文期刊>Journal of Sound and Vibration >Fast frequency response analysis of partially damped structures with non-proportional viscous damping
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Fast frequency response analysis of partially damped structures with non-proportional viscous damping

机译:非比例粘性阻尼的部分阻尼结构的快速频率响应分析

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摘要

This paper presents a new method for the modal frequency response analysis of partially damped structural system with non-proportional viscous damping. The basic idea is to handle the modal viscous damping matrix by noting that the rank of the viscous damping matrix is typically very low for problems of interest. Then, the Sherman-Morrison-Woodbury formula provides a convenient expression for the inverse of equation which includes the low-rank matrix. The new method, fast frequency response analysis (FFRA) algorithm, dramatically improves the performance of the modal frequency response analysis compared to conventional methods in industry with the same accuracy. (c) 2006 Elsevier Ltd. All rights reserved.
机译:本文提出了一种新的非比例粘性阻尼部分阻尼结构系统模态频率响应分析的方法。基本思想是通过注意粘性阻尼矩阵的等级对于所关注的问题通常非常低来处理模态粘性阻尼矩阵。然后,Sherman-Morrison-Woodbury公式为包含低秩矩阵的方程的逆提供了一种方便的表达式。新方法,快速频率响应分析(FFRA)算法,与同行业中的常规方法相比,可以显着提高模态频率响应分析的性能。 (c)2006 Elsevier Ltd.保留所有权利。

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