基于电磁和磁流变弹性体的复合隔振器设计及仿真分析  

Design and simulation analysis of hybrid isolator based on electromagnetism and magnetorheological elastomer

作　　者：胡国良 张杰 张佳伟 喻理梵 HU Guoliang;ZHANG Jie;ZHANG Jiawei;YU Lifan(School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学机电与车辆工程学院,江西南昌330013

出　　处：《南昌工程学院学报》2024年第3期1-7,共7页Journal of Nanchang Institute of Technology

基　　金：国家自然科学基金项目(52165004);江西省国际科技合作重点项目(20232BBH80010)。

摘　　要：针对电磁隔振器主动控制力不足和磁流变弹性体(MRE)隔振器移频范围窄的问题,提出并设计了一种基于电磁和MRE的复合隔振器。对复合隔振器进行整体结构设计及磁路分析,通过等效磁路法得到电磁隔振系统的解析电磁力表达式。同时采用COMSOL软件对电磁隔振系统及MRE隔振系统进行磁场仿真分析,并通过Dymola动力学仿真软件对复合隔振器进行动力学仿真,分析其隔振性能。仿真结果表明,增大复合隔振器中励磁线圈电流能够增大隔振器固有频率,并且能有效削减不同激励频率下的共振幅值。A hybrid isolator based on electromagnetism and magnetorheological elastomer(MRE)is proposed and designed to address the problems of insufficient control of the active force of electromagnetic isolator and narrow frequency shift range of MRE isolator.Firstly,the overall structural design and magnetic circuit design of the hybrid isolator are analyzed,and the analytical electromagnetic force expression of the electromagnetic isolation system is analyzed using the equivalent magnetic circuit method,as well as the magnetic field analysis of the MRE isolation system.Secondly,COMSOL software was used to analyze the magnetic field simulation of electromagnetic isolation system and MRE isolation system,and Dymola dynamics simulation software was used to carry out dynamics simulation of the hybrid isolator to analyze its isolation performance.The simulation results show that increasing the excitation coil current of the hybrid isolator can make the maximum growth rate of the intrinsic frequency of the isolator,and the hybrid isolator has a significant reduction of the amplitude of the co-oscillation at different excitation frequencies.

关 键 词：复合隔振器 电磁刚度 磁流变弹性体 磁路设计 移频 

分 类 号：TH134[机械工程—机械制造及自动化]