活塞内流道磁流变减振器热耦合阻尼特性分析  

A study on thermal coupling damping characteristics of magnetorheological dampers with inner channels

作　　者：朱石沙[1] 黄鹏程 唐利波 章岱 ZHU Shisha;HUANG Pengcheng;TANG Libo;ZHANG Dai(Guangdong University of Science and Technology,Dongguan 523083,China;Institute of Mechanical Engineering,Xiangtan University,Xiangtan 411105,China;Hunan Changfeng Automobile Co.Ltd.,Yongzhou 425100,China)

机构地区：[1]广东科技学院,广东东莞523083 [2]湘潭大学机械工程学院,湖南湘潭411105 [3]湖南长丰猎豹汽车有限公司,湖南永州425100

出　　处：《振动与冲击》2018年第16期172-176,197,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(51075345)

摘　　要：模拟研究了采用横向工作间隙的活塞内流道磁流变减振器(MRD)在热平衡状态下的阻尼特性。基于AMESim分析了汽车以不同速度在不同路面行驶时缸筒内流体达到热平衡的温度;模拟活塞振动并耦合热平衡温度从流体的角度计算了MRD的示功曲线;通过恒温加热模拟减振器的热平衡温度在振动试验台上对MRD的阻尼特性进行了测试。结果显示,汽车的行驶速度对减振器的阻尼性能有影响,当车速为40 km/h、70 km/h、110 km/h时,MRD的阻尼性能分别下降了9.4%、16.67%、20.69%。测试结果与仿真结果基本吻合。The damping characteristics of the magnetorheological damper(MRD)with the inner working clearance of the piston in the thermal equilibrium are studied.The temperature of the fluid in the vehicle’s cylinder at various speeds on various road surfaces was analyzed based on the AMESim.The power curve of MRD was calculated from the angle of fluid by simulating piston vibration and coupling thermal equilibrium temperature.The damping characteristics of MRD were tested on a vibration test bed by means of constant temperature heating simulation of the thermal equilibrium temperature of the shock absorber.The results show that the vehicle’s driving speed influences the shock absorber’s damping performance.When the vehicle speed is 40 km/h,70 km/h,and 110 km/h,the MRD’s damping performance is decreased by 9.4%,16.67%and 20.69%,respectively.The test results are basically consistent with the simulation results.

关 键 词：MRD 热耦合 热平衡 阻尼特性 

分 类 号：TH135[机械工程—机械制造及自动化] TB381[一般工业技术—材料科学与工程]