摘要
对主振动系统分别受外力激励和基础激励的随机振动动力吸振器进行分析比较 ,以主质量位移方差最小作为优化目标 ,同时考虑吸振器本身位移的许用范围 ,提出了两类基于随机振动的动力吸振器最优参数的计算公式。通过算例分析 ,吸振效果明显 ,证明所给公式是有效的 ,这对动力吸振器的优化设计和使用选择具有理论指导意义。
This paper has an analsis of a vibration absorber system excited by a random force at its main mass or by random motion of the support of the mass.A comparison of analytical results of the system responses to the two types of excitations is made.Taking the displacement variance of the main mass to be minimum as the optimal object,and considering allowed displacement of absorber itself,the formulas for calculating the optimum parameters of the absorber under the two types of excitations are proposed.Calculated results of an example show that the absorber achieves good results and the formulas given in the paper are effective.The work in the paper gives theoretical guidance in the use and the optimum design of a vibration absorber.
出处
《振动．测试与诊断》
EI
CSCD
2000年第2期123-127,共5页
Journal of Vibration,Measurement & Diagnosis
关键词
动力吸振器
随机振动
最优设计
参数
vibration absorber random vibration optimal design parameter
