随机激振下双层减振问题的分析

Analysis of Double-Layer Vibration Absorbing under Random Vibration Excitation

利用随机振动理论对双层减振问题进行探讨，推导出双自由度系统质点绝对加速度及相对位移均方值的函数表达式。给出了系统响应与系统结构参数间的关系曲线，并得出随机激振下双层减振系统结构参数的确定方法。

By applying random vibration theory,the author studies double-layer vibration absorbing in detail; and derives functional expression of the absolute acceleration of mass points in two degree-of-freedom system and the root-mean-square value of relative displacement; and gives relational curve between system response and structural parameter of system,and finally,obtains the method for defining structural parameter of double-layer vibration absorbing system under random vibration excitation.