汽车悬架MR阻尼器的磁流变液沉降性改善研究  

Improvement of Magnetorheological Fluid Sedimentation Performance of MR Damper Used in Automobile Suspension

作　　者：杨坤全[1] 黄惠[2] YANG Kunquan;HUANG Hui(Zhangzhou Institute of Technology,Zhangzhou 363000,China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]漳州职业技术学院,福建漳州363000 [2]福州大学机械工程及自动化学院,福州350108

出　　处：《沈阳理工大学学报》2022年第1期79-88,共10页Journal of Shenyang Ligong University

基　　金：福建省自然科学基金面上项目(2020J01452);福建省中青年教师教育科研基金资助项目(JZ180808);漳州职业技术学院科研项目(ZZY2021B068)。

摘　　要：磁流变液沉降稳定性是影响现有汽车悬架用磁流变(MR)阻尼器使用寿命的关键因素之一。以商用成品磁流变液为基础,在理论指导下,通过实验研究改善其在磁场作用下的沉降性能。首先对磁场作用下影响磁性颗粒在磁流变液中沉降性能的主要因素进行理论分析;然后以市场现有磁流变液(MRF)产品MRF-450为基础,通过微观结构及导电导磁性能分析,对制备条件和配方进行改进;最后对改善后的磁流变液进行性能测试。力学性能测试结果表明其在改善沉降性的同时保证了力学性能,基于导电原理的稳定性测试结果显示其在MR阻尼器中静置24周后的沉降率仅为1.5%,相比传统MRF-450降低19.6%。The sedimentation stability of MR fluid of automobile suspension is one of the key factors that affect the service life of the existing MR damper.The existing commercial product magnetorheological fluid is taken as the research object,and experimental study was carried out to improve its settling performance under magnetic field with guidance of theory.Firstly,the main factors that affect the sedimentation performance of magnetic particles in MRF under the action of magnetic field are analyzed theoretically.Then,based on the existing product MRF-450 in the market,the preparation conditions and formula were improved by analyzing the microstructure and magnetic conductivity.Finally,the properties of the improved magnetorheological fluid were tested.The results of the mechanical properties test showed that the improved settling property ensured the mechanical properties.In addition,test results of conductive principle show that its settlement performance after 24 weeks in the MR damper is only 1.5%,which is 19.6%lower than the traditional MRF-450.

关 键 词：磁流变液 沉降性 导磁性 磁流变阻尼器 导电性 

分 类 号：TP211.3[自动化与计算机技术—检测技术与自动化装置]