摘要
磁流变液(magnetorheological fluid,MRF)屈服应力测试装置在工作运行过程中产生了大量的热,导致测试装置温度升高,屈服应力测试精度下降的结果;同时对磁流变液特性也造成了很大的影响。课题组基于FLUENT软件对测试装置进行仿真分析,以提高测试精度。首先,设计屈服应力测试装置,建立包含漆包线、装配间隙等特征的测试装置温度场模型;其次,对测试装置进行网格划分并运用仿真软件对温度场变化进行模拟研究;最后,在仿真模型的基础上,对漆包线绕组综合热导率和测试装置装配间隙进行分析。研究得到了温度对装置的影响规律,确定了最佳综合热导率及装配间隙;并确定该装置测试屈服应力时的最佳温度场。温度场研究提高了该装置对屈服应力测试的精度。
In view of the fact that the yield stress testing device of magnetorheological fluid(MRF)generates a lot of heat during its operation,resulting in the rise of the temperature of the testing device and the decrease of the accuracy of the yield stress testing,which also has a great influence on the characteristics of MRF.The simulation analysis of the test device was carried out based on FLUENT software to improve the test accuracy.Firstly,the yield stress testing device was designed and the temperature field model of the testing device including the characteristics of enameled wire and assembly gap was established.Secondly,the testing device was meshed and the temperature field changes were simulated by simulation software.Finally,the comprehensive thermal conductivity of enameled wire windings and the assembly gap of the device were analyzed based on the simulation model.The results show that the influence of temperature on the yield stress testing device is obtained,and the optimum comprehensive thermal conductivity and assembly gap are determined.The optimum temperature field of the device for testing yield stress is determined.The temperature field study improves the accuracy of the device for testing yield stress.
作者
纪东升
罗一平
任洪娟
魏丹
刘文涛
JI Dongsheng;LUO Yiping;REN Hongjuan;WEI Dan;LIU Wentao(School of Mechanical and Automotive Engineering,Shanghai University of Engineering and Technology,Shanghai 201620,China)
出处
《轻工机械》
CAS
2020年第2期38-44,50,共8页
Light Industry Machinery
基金
上海市地方能力建设基金资助(19030501100)。
关键词
磁流变液
漆包线
装配间隙
热导率
FLUENT
MRF(magnetorheological fluid)
enameled wire
assembly gap
thermal conductivity
FLUENT
