多盘连续可变工作间隙磁流变制动器仿真与验证  

Simulation and verification of multi-disc continuous variable working gap magneto-rheological brake

作　　者：李东恒 王娜[4] Saiful Anuar Abu Bakar 宋万里[4] LI Dongheng;WANG Na;Saiful Anuar Abu Bakar;SONG Wanli(Automotive Development Center,Universiti Teknologi Malaysia,Johor Bahru 81310,Malaysia;Faculty of Mechanical Engineering,Universiti Teknologi Malaysia,Johor Bahru 81310,Malaysia;School of Mechanical Engineering,Liuzhou Polytechnic University,Liuzhou,Guangxi 545006,P.R.China;School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,P.R.China)

机构地区：[1]马来西亚理工大学汽车发展中心,马来西亚新山81310 [2]马来西亚理工大学机械工程学院,马来西亚新山81310 [3]柳州职业技术大学机电工程学院,广西柳州545006 [4]东北大学机械工程与自动化学院,沈阳110819

出　　处：《重庆大学学报》2024年第8期26-38,共13页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(52005085)。

摘　　要：为提高磁流变制动器制动能效,提出一种多盘连续可变磁流变液工作间隙结构的磁流变制动器。在ANSYS workbench环境下完成不同电流、间隙状态下的三维静态磁场仿真,对磁场沿工作间隙分布状况进行分析,通过试验台架对制动器性能进行测试。结果表明,磁流变液工作区域磁矢量分布相对均匀,无明显积聚现象,磁路设计合理。理论与实验结果变化趋势基本吻合,但在电流较大时,两者之间误差呈逐渐增大趋势。制动力矩在0~2.5 A电流变化区间增速较快,而在2.5~4.0 A区间明显放缓,最大力矩达到146.4 N·m,较间隙未改变状态增加25.80%。设计的制动器TVR值达到48.81 kN·m/m^(3),较传统磁流变制动器结构更紧凑,力矩调节范围更广,设计思路及实验结论对磁流变制动器结构的进一步研究具有借鉴意义。This work proposes an innovative magnetorheological fluid(MR)brake design with a multi-disc structure and adjustable MR fluid working gap to enhance braking efficiency.Simulations of the threedimensional static magnetic field,varying by electrical current and gap state,were carried out in ANSYS Workbench.Magnetic field distribution across the working gaps was analyzed and brake performance evaluation was complemented by test bench.Results indicate a relatively uniform magnetic vector distribution within the MR fluid working area,suggesting a well-conceived magnetic circuit design.While theoretical and experimental results generally align,discrepancies widen at higher currents.Braking torque surges from 0 A to 2.5 A,and then moderates from 2.5 A to 4.0 A,peaking at 146.4 N·m,which is a 25.80%increase over the non-gap change condition.Achieving a torque-to-volume ratio(TVR)of 48.81 kN·m/m³,the designed brake surpasses traditional MR brakes in compactness and torque adjustability.This design methodology and experimental findings offer valuable insights for advancing MR brake structural research.

关 键 词：磁流变液 楔形工作间隙 连续可变 制动性能 

分 类 号：U463.51[机械工程—车辆工程]