磁流变弹性体扭转吸振器设计与动力学仿真

研制了一种以磁流变弹性体为核心智能控制元件的半主动扭转动力吸振器，基于扭转方向上的动力吸振器消振原理，设计了扭转动力吸振器的基本结构.对吸振器进行磁路仿真分析，保证强闭合磁场能够有效控制磁流变弹性体刚度;利用有限元软件进行吸振器动力学仿真，保证了吸振器固有频率对外界激励频率的有效跟随，以实现吸振效果.将吸振器安装在传动系统对应位置，进行传动系统振动响应仿真分析，结果表明动力吸振器能够有效削减传动系统的瞬态波动转矩.提出的磁流变弹性体半主动扭转动力吸振器为旋转机械系统减振应用提供了一种新的思路.

Design and Dynamic Simulation of Magneto-Rheological Elastomer Torsional Dynamic Vibration Absorber

A semi-active torsional dynamic vibration absorber(DVA) with a magneto-rheological elastomer(MRE) as the core intelligent control element was developed. Based on the principle of DVA in torsional direction， the structure of the DVA was designed. The magnetic circuit simulation analysis of the absorber was carried out to ensure a strong closed magnetic field， which can effectively control the stiffness of MRE. The dynamics simulations of the DVA were carried out with the finite element software，which ensures that the natural frequency of the DVA can effectively follow the external excitation frequency to achieve the vibration absorption effect. The vibration absorber was installed on the corresponding position of the transmission system， and the simulation analysis of the system vibration response shows that the DVA can effectively reduce the transient fluctuation torque of the transmission system. The as-proposed MRE semi-active DVA provides a new idea for vibration reduction of rotating mechanical systems.