摘要
重载列车车轮踏面制动是一个复杂的动态接触热-机耦合问题,介绍了热-机耦合问题的求解方法,并利用有限元分析软件ANSYS对提速货车的单闸瓦踏面制动过程进行了紧急制动工况的数值仿真,定量地给出了车轮踏面温度和应力随时间的变化规律,为研究车轮踏面热疲劳提供了理论依据。
Wheel tread brake of heavy train is a complicated problem of dynamic contact thermal-mechanics coupling.It introduces the solution method of thermal-machine coupling.Based on FEM software ANSYS,it simulates numerically the emergency brake process of single brake-shoe tread for higher-speed wagon,illustrates the tread temperature and stress variation rules with time,provides the theoretical gist for investigation of tread thermal fatigue.
关键词
踏面制动
温度场
应力场
瞬态分析
Tread Brake
Temperature Field
Stress Field
Transient Analysis
