城市轨道交通车辆踏面制动热应力仿真分析  

Thermal Stress Simulation Analysis of Urban Rail Transit Vehicles Tread Braking

作　　者：刘海波[1] 厉砚磊[1] 石启龙[1,2] 杨建伟[3] 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266031 [2]太原科技大学机电工程学院,山西太原030024 [3]北京建筑工程学院机电与汽车工程学院,北京100044

出　　处：《机械工程与自动化》2012年第1期49-51,共3页Mechanical Engineering & Automation

基　　金："十二五"国家科技支撑计划重大项目(2011BAG01B00);北京建筑工程学院博士启动基金资助项目(101001704);太原市科技明星资助项目(200901009)

摘　　要：分析了城轨列车在踏面制动方式下车轮踏面热疲劳裂纹产生的机理,并建立了车轮制动过程瞬态温度场三维有限元模型,采用整体输入热流和对流换热的简化模式为基础的传统理论的热应力计算方法,计算车轮在连续两次紧急制动工况下的热温度场及热应力场,为确定城轨列车制动方式及列车制动距离等技术规范提供计算依据。Based on analysis of initiation mechanism of thermal fatigue cracks,which occurs in the wheel tread of urban rail train,the three-dimensional finite element model of the transient temperature field during braking was established.The thermal stress calculation of the traditional theory which was based on a simplified mode of the overall input heat flux and convective heat transfer was improved.Besides,wheel temperature field and heat stress field were calculated in condition of the two consecutive braking of the wheels.This work is helpful in determining the technical specification which includes the mode of action,the braking distance of train and so on.

关 键 词：车轮 踏面制动 有限元 热应力 

分 类 号：U260.35[机械工程—车辆工程]