Modal identification of linear non-proportionally damped systems by wavelet transform

被引：38

作者：

Erlicher, Silvano ^{[1
]}

Argoul, Pierre ^{[1
]}

机构：

[1] ENPC, LCPC, Inst Navier, LAMI, F-77455 Marne La Vallee 2, France

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2007年 / 21卷 / 03期

关键词：

modal identification; complex modes; shock response; time-frequency analysis; wavelet transform; Cauchy mother wavelet;

D O I：

10.1016/j.ymssp.2006.03.010

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A time-frequency identification technique based on wavelet transform is formulated and applied to free-decay responses of linear systems with non-proportional viscous damping. The Cauchy mother wavelet is used. Frequencies, modal damping ratios and complex mode shapes are identified from output-only free vibration signals. This identification technique has also shown to be effective when the (non-proportional) damping is significant. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1386 / 1421

页数：36

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