金属橡胶隔振系统动刚度及减振效能分析  

Dynamic stiffness and vibration reduction efficiency of metal rubber

作　　者：赵国伟[1] 李德勇[1] 陈勇[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《振动与冲击》2014年第22期193-197,共5页Journal of Vibration and Shock

摘　　要：基于圆柱螺旋弹簧受压变形原理建立金属橡胶隔振系统动力学模型。分析在简谐激励作用下金属橡胶的动态刚度、频率响应及减振特性。基于谐波平衡法分别获得激励频率对金属橡胶压缩量幅值影响及金属橡胶压缩量幅值与激励频率对金属橡胶动态刚度影响。通过分析金属橡胶隔振系统获得金属橡胶构件高度、工作面横截面积及激励频率对冲击隔离系数影响,推导的冲击隔离系数表达式对金属橡胶设计及工程实际应用有重要指导意义。Based on the principle of compressive deformation of cylindrical helical spring,the dynamic equations of a metal rubber vibration isolation system were derived.The dynamic stiffness,frequency response and vibration characteristics of metal rubber were analyzed under the condition of simple harmonic excitation.According to the method of harmonic balance,the influence of excitation frequency on the metal rubber compression magnitude,and the influences of compression magnitude and excitation frequency on the metal rubber dynamic stiffness were analyzed.On the basis of the analysis of the metal rubber vibration isolation system,the effects of metal rubber height,cross-sectional area of working surface and excitation frequency on the shock isolation coefficient were studied.The shock isolation coefficient can provide a reference to the design of metal rubber and its applications in engineering.

关 键 词：金属橡胶 动力学模型 动态刚度 频率响应 冲击隔离系数 

分 类 号：O328[理学—一般力学与力学基础] TB535[理学—力学]