磁流变液剪切屈服应力计算模型  

Shear Yield Stress Model of Magnetorheological Fluid

作　　者：陈亚蒙 罗一平 任洪娟 魏丹 康路路 CHEN Yameng;LUO Yiping;REN Hongjuan;WEI Dan;KANG Lulu(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院

出　　处：《轻工机械》2020年第1期12-17,共6页Light Industry Machinery

基　　金：上海地方能力建设基金项目(19030501100)

摘　　要：为了提升磁流变液剪切屈服应力计算的准确性,课题组以麦克斯韦应力张量理论为基础,从微观角度考虑非线性磁化过程从而建立磁流变液链状模型。以MRF-122EG和MRF-132LD磁流变液2种液体样本为研究对象,通过ANSOFT软件进行磁场仿真并得出2种样品的屈服应力。结果显示:MRF-122EG、MRF-132DG样品的屈服应力与Lord公司提供的对应技术参数的最大相对误差分别约为6%和9%,属于实验允许的范围,说明该理论模型具有合理性。该研究也为磁流变液剪切屈服应力计算提供一种实用的方法。In order to improve the accuracy of the calculation of shear yield stress of magnetorheological fluids,a chain model of magnetorheological fluids was established based on Maxwell theory considering the non-linear magnetization process from the microcosmic aspect.Two kinds of magnetorheological liquid samples,MRF-122EG and MRF-132LD,were taken as the research object.The magnetic field simulation was carried out by ANSOFT software and the yield stress of the two samples was obtained.The results show that the maximum relative error between the yield stress values of MRF-122EG and MRF-132DG and the corresponding technical parameters provided by Lord is about 6% and 9%,respectively,which is within the experimental allowable range,indicating that the theoretical model has rationality.This study also provides a practical method for calculating the shear yield stress of the magnetorheological fluid.

关 键 词：磁流变液 剪切屈服应力 麦克斯韦理论 磁流变液链状模型 ANSOFT软件 非线性磁化 

分 类 号：TH140[一般工业技术—材料科学与工程] TM271[机械工程—机械制造及自动化]