摘要
外部环境是造成道路事故的一个主要因素。采用了一种新型智能材料,磁流变弹性体(MRE)作为汽车座椅减振的核心材料,并相应建立了实验装置,通过计算获得了该系统模型在不同磁场下的等效阻尼和等效刚度,运用Simulink软件对汽车座椅减振系统进行了仿真分析。研究结果表明,磁流变弹性体低频阶段具有较好的移频和减幅特性;磁流变弹性体中的金属磁性颗粒在磁场作用下的耦合力成非线性关系,造成磁流变弹性体减振效果在不同励磁电流下呈现非线性;减振效果与外激励的形式有关。
Environmental stress is a key factor to cause traffic accident, a new smart material namely magnetorheological elas- tomer （MRE） is applied to the automotive vibration reduction system. The experiment is designed to calculate the equivalent stiffness and damping properties of the system under different magnetic field strength and Simulink is used to analyze the effect of vehicle seat vibration reduction. The result shows that the MRE has the adaptive ability of shifting its natural frequency and decreasing the vibration amplitudes. The effect of vehicle seat vibration reduction was nonlinear when saturation of the particle magnetization is happened and is related to the environmental stress.
出处
《机械研究与应用》
2013年第5期91-93,96,共4页
Mechanical Research & Application
基金
宿迁学院科研项目(No.2012KY49)
