随机振动动力吸振器最优参数的计算

The Optimal Parameter Calculation of Random Vibration Dynamic Absorber

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，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，这对动力吸振器的设计计算和使用选择具有理论指导意义。

Studies are conducted in this paper to analyse and compare the random vibration dynamic absorber whose main vibration system is stimulated respectively by extraneous force or foundation. According to the optimal object of the minimum of the main quality displacement variance, it is derived that two kinds of computation formula of the optimal parameter based on the random vibration dynamic absorber. The calculating results show that these formula are effective, and the effect of reducing vibration is satisfactory. This paper will be of theoretical value in the designing and using of dynamic vibration absorber.