摘要
制备出硅油黏度为100 cps以及质量配比为7.6:1.2:1.2的硅橡胶基磁流变弹性体(Magnetorheological Elastomer,MRE),并对其动态力学性能进行测试。设计一种混合式MRE隔振器,利用Maxwell有限元仿真软件对隔振器进行磁场仿真分析,并搭建振动实验平台对其性能进行测试。实验结果表明,剪切频率和剪切应变分别为4 Hz、0.1%时,MRE的最大相对磁流变效应达到6562%;通入0~3 A电流时,MRE隔振器的固有频率在122.21~247.50 Hz范围内变化,相比于0 A下系统固有频率增大103%,说明调整外加电流能主动改变隔振系统的固有频率,从而避免系统产生共振现象,使其具有较好的隔振性能。
A silicone rubber-based magnetorheological elastomer(MRE)with a silicone oil viscosity of 100 cps and a mass ratio of 7.6:1.2:1.2 was fabricated,and its dynamic mechanical properties were tested.A hybrid MRE isolator using the fabricated MRE materials was designed,magnetic field simulation of the MRE isolator was performed using the Maxwell software.Finally,a vibration test rig was built to test the isolation performance of the MRE isolator.The experiment results show that the maximum relative MR effect of MRE can reach 6562%at the shear frequency of 4 Hz and shear strain of 0.1%.The natural frequency of the MRE isolator changes in the range of 122.21-247.50 Hz when a current of 0-3 A is applied,which increases by 103%compared to the system natural frequency at 0 A.It indicates that adjusting the applied current can actively change the natural frequency of the isolation system,thereby avoid the resonance and have good isolation performance.
作者
杨明
胡国良
尧子健
张杰
YANG Ming;HU Guoliang;YAO Zijian;ZHANG Jie(School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China)
出处
《噪声与振动控制》
北大核心
2025年第5期260-265,共6页
Noise and Vibration Control
基金
国家自然科学基金资助项目(52165004)
江西省国际科技合作重点资助项目(20232BBH80010)。
关键词
振动与波
磁流变弹性体
隔振器
有限元仿真
振动测试
固有频率
vibration and wave
magnetorheological elastomer
vibration isolator
finite element simulation
vibration testing
natural frequency
