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1、汽车工程2017年(第39卷)第6期AutomotiveEngineering2017(Vol.39)No.6doi:10.19562/j.chinasae.qcgc.2017.06.011汽车通风盘式制动器的摩擦学性能∗测试和流固热耦合仿真张森,肖林京,刘强,周坤,朱绪力(山东科技大学机械电子工程学院,青岛266590)[摘要]根据摩擦微凸理论和耦合控制方程组分析了汽车通风盘式制动器的弹塑性状态转变条件和对流换热机理,通过乘积解法实现了通风盘的三维传热计算;基于Link3900NVH测试台对制动器的平均摩擦因数和摩擦稳定系数进行了测试,得出制动速度、制动压力和
2、温度对其摩擦学性能的影响;建立了制动器的流固热数值仿真模型,利用MPCCI平台实现了ABAQUS热固耦合和FLUENT流固耦合的同步迭代,通过耦合节点的数据共享与交换得出盘体的瞬态温度场、应力场和耦合面的对流换热系数。结果表明,在单制动周期内通风盘表面的温度变化的数值模拟值与试验值基本一致,最大偏差仅为5.6％,这对于通风盘式制动器的性能评价和结构优化有着重要的指导意义。关键词:通风盘式制动器;摩擦因数;台架试验;流固热耦合;数值模拟TribologyPerformanceTestingandFluid-solid-heatCouplingSimulationo
3、fAutomotiveVentilatedDiscBrakeZhangSen,XiaoLinjing,LiuQiang,ZhouKun＆ZhuXuliCollegeofMechanicalandElectricalEngineering,ShandongUniversityofScienceandTechnology,Qingdao266590[Abstract]Theconditionforthetransitionbetweenelasticandplasticcontactstateofvehicleventilateddiscbrakeanditscon
4、vectionheattransfermechanismareanalyzedbasedonmicroconvextheoryoffrictionandcouplingcontrolequations,andthe3Dheattransfercalculationofventilateddiscisconductedwithproductsolvingmethod.Link3900NVHtestrigisusedtomeasuretheaveragefrictioncoefficientandfrictionstablecoefficientofdiskbrak
5、e,withtheeffectsofbrakingspeed,brakingpressureandtemperatureonitstribologyperformanceobtained.Thefluid-solid-heatcouplingnumericalsimulationmodelissetup,andthesynchronousiterationsofheat-solidcou-plinginABAQUSandfluid-solidcouplinginFLUENTareperformedonMPCCIplatform,andthetransientte
6、mper-aturefield,stressfieldandtheconvectiveheattransfercoefficientoncouplingsurfaceareobtainedbydatasharingandexchangeofcouplingnotes.Theresultsshowthatinasinglebrakingcycle,thenumericallysimulatedvaluesoftemperaturechangesonventilateddiscarebasicallyinaccordancewiththatoftestdatawit
7、hthemaximumdeviationbeingonly5.6％.Thestudyhasagreatguidingsignificancefortheperformanceevaluationandstructureoptimiza-tionofventilateddiscbrake.Keywords:ventilateddiscbrake;frictioncoefficient;benchtest;fluid-solid-heatcoupling;numericalsimulation∗国家自然科学基金(51575323)和研究生科技创新基金(Yc15010
8、5)资助。原稿收到日期为
