动力吸振器中库仑阻尼对吸振性能的影响  

Influence of Coulomb damping on vibration absorber

作　　者：张涛[1,2] 黄宏彪[1,2] 王斌[1,2] 刘芳[1,2] 徐嘉[1,2] 朱健强[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]中国科学院研究生院,北京100039

出　　处：《强激光与粒子束》2010年第5期1069-1072,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：研究了动力吸振器中库仑阻尼(干摩擦)对吸振性能的影响。给出了库仑摩擦模型,在考虑了吸振器中的库仑阻尼的情况下,分析了库仑阻尼引起的主振动系统与附加质量块的2种相对运动状态(滑移和粘滞)以及它们存在和转换的条件,讨论了因库仑阻尼引起的吸振器自由度冻结现象;用Simulink仿真工具对非线性吸振器进行了数值仿真,研究了谐波和白噪声激励下库仑阻尼对吸振器吸振性能的影响以及库仑阻尼与线性阻尼的等效问题。结果显示:弱激励条件下,非线性吸振器减弱吸振效果,强激励条件下增强吸振效果。The influence of Coulomb damping on vibration absorber.The model of Coulomb damping was introduced concerning Coulomb damping in the vibration absorber,two relative motions between the master vibration system and the addition mass,sticking and sliding,were analyzed,and the conditions in which two motions and alternate were discussed,as well as the freezing of the degree of freedom due to coulomb damping.Numerical simulation was conducted using Simulink of MATLAB to study the vibration absorbing excited by harmonic and white noise and the equivalence between coulomb damping and linear damping.

关 键 词：振动控制 动力吸振器 调谐质量阻尼器 非线性振动 库仑阻尼 干摩擦 

分 类 号：TB535[理学—物理]