橡胶隔振移动硬盘非线性系统的冲击研究  

Study on Impulse Response of Nonlinear System of Mobile Hard Disk with Rubber Isolator

作　　者：班书昊[1] 李晓艳[1] 蒋学东[1] 严国新 

机构地区：[1]江苏工业学院机械系,江苏常州213016 [2]常州寰宇减震器厂,江苏常州213016

出　　处：《噪声与振动控制》2009年第5期16-18,110,共4页Noise and Vibration Control

摘　　要：在橡胶隔振移动硬盘构成的非线性系统中引入了频率硬化系数,建立非线性振动微分方程,并构造相应的仿真计算模型。使用该模型计算具有不同脉冲加速度幅值和脉冲时间宽度的冲击响应,分析并讨论脉冲信号参数对隔振效果的影响。理论分析与数值模拟表明:与传统的线性振动模型相比,引入频率硬化系数的橡胶隔振模型更符合实际,且具有良好的冲击响应。仿真模型简单,计算方便,可以用于快速确定非线性隔振系统的固有频率。Employing the frequency hardening coefficient in the nonlinear dynamic system consisting of mobile hard disks with rubber isolator, a set of nonlinear differential equations for this system is established. The corresponding model for numerical simulation is constructed. The dynamic responses for different pulse durations and pulse magnitudes of acceleration are computed with this model. The influences of pulse signal parameters on the isolation effect are analyzed and discussed. Theoretical analysis and numerical simulation show that the model presented here is more reasonable than the traditional linear dynamic model. Furthermore, this model is simple and convenience for computation. It can be used to determine the natural frequencies of nonlinear vibration-isolation system effectively.

关 键 词：振动与波 橡胶隔振器 非线性 半正弦脉冲 仿真 冲击响应 

分 类 号：O328[理学—一般力学与力学基础] O322[理学—力学]