Instantaneous indicators of structural behaviour based on the continuous Cauchy wavelet analysis

被引：73

作者：

Argoul, Pierre ^{[1
]}

Le, Thien-Phu ^{[1
]}

机构：

[1] Lab. Analyse Mat. et Identification, Unité Mixte ENPC-LCPC ENPC, 77455 Champs/Marne, 6-8, Avenue Blaise Pascal

来源：

Mechanical Systems and Signal Processing | 2003年 / 17卷 / 01期

关键词：

D O I：

10.1006/mssp.2002.1557

中图分类号：

学科分类号：

摘要：

In this contribution, four instantaneous indicators are proposed to characterize the nonlinear behaviour of mechanical structures from their transient responses. These indicators are developed from the Cauchy wavelet analysis of the accelerometric responses of the structure. They are based on the notion of ridges and skeletons introduced for the wavelet processing of signals that are assumed to be defined as a sum of asymptotic amplitude and phase-modulated terms. The proposed indicators are then applied to the data collected at the University of Liège. Some preliminary results are given for the characterization of the non-linear behaviour of the beam. © 2003 Published by Elsevier Science Ltd.

引用

页码：243 / 250

页数：7

共 7 条

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