一种小动静比橡胶隔振器仿真与试验  

Numerical and Experimental Study of a Rubber Isolator with Low Dynamic to Static Stiffness Ratio

作　　者：李杨[1] 黄修长[1,2] 苏智伟 焦素娟 郑智伟[1] 张啸涵 LI Yang;HUANG Xiuchang;SU Zhiwei;JIAO Sujuan;ZHENG Zhiwei;ZHANG Xiaohan(Institute of Vibration,Shock and Noise,State Key Laboratory of Mechanical System and Vibration,Shanghai Jiaotong University,Shanghai 200240,China;National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering,Shanghai 200031,China;Faculty of Intelligent Manufacturing,Wuyi University,Jiangmen 529020,Guangdong,China)

机构地区：[1]上海交通大学振动冲击噪声研究所机械系统与振动全国重点实验室,上海200240 [2]上海船舶设备研究所船舶与海洋工程特种装备和动力系统国家工程研究中心,上海200031 [3]五邑大学智能制造学部,广东江门529020

出　　处：《噪声与振动控制》2024年第2期256-260,共5页Noise and Vibration Control

基　　金：航空发动机及燃气轮机重大专项基础研究资助项目(J2019-Ⅱ-0013);国家自然科学基金资助项目(51875336);上海市科委项目资助项目(20JC1415000);上海交通大学深蓝计划资助项目(SL2021MS007)。

摘　　要：通过隔振器内部结构设计,在保证承载能力的同时降低橡胶隔振器的动态刚度。开展橡胶隔振器的静态变形、在给定静变形下的动态仿真分析,表明该隔振器在静态力-位移曲线上具有负斜率特性,对应隔振器内部结构的失稳变形;进行隔振器的静压试验、动态试验和隔振系统中的振动传递试验,结果表明,静态力-位移曲线试验结果呈现负斜率特性,在静态曲线上不同工作点处的固有频率呈现负斜率处最小的特性。Through the internal structure design of the rubber shock isolator,its dynamic stiffness is reduced with its bearing capacity ensured.The static deformation of the rubber isolator and its dynamic behavior under the given static deformation are simulated and analyzed.It shows that the isolator has a negative slope characteristic according to its static force vs.displacement curve,corresponding to the instability deformation of the internal structure of the isolator.The static pressure test,dynamic test and vibration transmission test for the vibration isolation system of the shock isolator are carried out.It is shown that the results of static force vs.displacement curve test show a negative slope characteristic,and at the natural frequencies at different working points on the static curve the negative slopes are minimum.

关 键 词：振动与波 动静比 橡胶隔振器 静态压缩 传递率 

分 类 号：TB535.1[理学—物理]