Time-frequency analysis of friction-induced vibration under reciprocating sliding conditions

被引：38

作者：

Chen, G. X. ^{[1
]}

Zhou, Z. R. ^{[1
]}

机构：

[1] SW Jiaotong Univ, Natl Tract Power Lab, Tribol Res Inst, Chengdu 610031, Peoples R China

来源：

WEAR | 2007年 / 262卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

time-frequency analysis; friction-induced vibration; squeal; reciprocating sliding;

D O I：

10.1016/j.wear.2006.03.055

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A time-frequency analysis can give an overall view of the behaviour of friction-induced vibration. In this paper, short-time Fourier transform (STFT), Wigner-Ville distribution (WVD), Choi-Williams distribution (CWD) and Zhao-Atlas-Marks distribution (ZAMD) are applied to analyze time-frequency characteristics of friction-induced vibration. The result shows that there is always a frequency change in the time-frequency presentation of vibration in the location where the vibration is bounded. The frequency changes in time-frequency presentations are associated with nonlinearity of vibration systems. The nonlinearity may be counted as the evidence to support the consideration that friction-induced vibrations are bounded by limit cycles due to the system nonlinearity. Based on the time-frequency presentations of vibrations, it may be concluded that the friction vibration system is generally a linear system in the phase of vibration initiation but is a nonlinear system in the phases of vibration being bounded and disappearance. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1 / 10

页数：10