基于磁流变弹性体的复合式双向隔振器设计

Design of Composite Bi-directional Vibration Isolators Using Magnetorheological Elastomers

为了抑制机器人行走过程中与地面接触引起的振动与冲击,设计并制作一种复合式双向磁流变弹性体(Magnetorheological Elastomer,MRE)隔振器,制备硅橡胶基MRE,利用有限元软件对隔振器进行电磁学仿真分析,并搭建实验平台对隔振器的性能进行测试。实验结果表明,所制备的MRE材料的磁流变效应达到1 103%;在垂直和水平方向,通入2 A电流后该复合式双向MRE隔振器等效刚度分别增加257.1%与19.6%,等效阻尼增加198.5%与13.9%,证明所提出的复合式双向MRE隔振器在振动控制中具有一定的应用潜力。

In order to suppress the vibration and impact of the robots induced by the contact with the ground in the walking process, a composite bi-directional vibration isolator using magnetorheological elastomers(MRE) is designed and prepared. The MRE with silicone rubber substrate is prepared. The electromagnetic field of the vibration isolator is studied by using finite element software. Then, the experiment platform is set up to test the performance of the vibration isolator.The experimental results show that the magnetorheological effect of the prepared MRE material reaches 1 103 %. In the vertical and horizontal directions, the equivalent stiffness of the composite bi-directional MRE isolator increases by 257.1 %and 19.6 % respectively, and the equivalent damping increases by 198.5 % and 13.9 %, respectively, after 2A current is applied. Thus, the application potential of the proposed composite bi-directional MRE isolator in vibration control is proved.