受迫干摩擦阻尼振子的平均法分析  

The averaging analysis of a dumped oscillator with dry friction

作　　者：陈立群[1] 吴哲民[1] 

机构地区：[1]上海大学力学系

出　　处：《商丘师范学院学报》2002年第2期1-2,共2页Journal of Shangqiu Normal University

基　　金：国家自然科学基金资助项目(10172056)

摘　　要：研究简谐激励作用下干摩擦阻尼振子的幅频特性.采用平均法导出了平均化方程,基于平均化方程的平衡点分析得到了幅频特性方程,通过数值算例将平均法得到幅频特性曲线与直接数值方法的结果进行了比较.This paper deals with the amplitude-frequency characteristic of a dumped oscillator with dry friction under a simple harmonic excitation. The averaging method is applied. Based on the equilibrium point analysis of the averaging equation, the amplitude-frequency characteristic equation is obtained. A numerical example is presented to compare the amplitude-frequency curves deduced from the averaging with those given by the direct numerical method.

关 键 词：干摩擦 阻尼振动 平均法 幅频特性 数值方法 

分 类 号：O322[理学—一般力学与力学基础]