制动过程踏面剥离热应力耦合仿真分析

The Simulation Analysis of Braking Process with Tread Peeling Thermal-stress Coupling

踏面剥离的研究一直是许多的专家从事的工作,研究的轨道和车轮踏面的损伤等一系列的问题。踏面涉及的是重载、振动等一系列的问题。车轮制动产生的摩擦热应力会对于车轮踏面有着一定损伤,本文通过Solidworks建立车轮踏面模型与钢轨,利用ANSYS有限元分析进行模拟制动实验,分别通过纯机械载荷和热应力耦合仿真分析,我们通过研究得出的是在滚动的过程中,高温短时间产生,与周围的空气热交换量小,热量累积,而车轮正在高速的向前移动,导致最高的温度点向后移了一点,比较符合实体实验。

Many experts are engaged in the research of tread stripping.The main research is the damage of pathway and wheel.Tread is engaged a series of problem with heavy load and vibration.Frictional thermal stress arising from braking is harm to wheel tread.This paper we build the model of pathway and wheel by Solidworks software.We test simulation braking By ANSYS,respectively by pure mechanical load thermal-stress coupling.We get some results that high temperature during the rolling process,heat exchange between the surrounding air,the wheels are moving forward at a high speed,leads to the highest temperature point moved back a little bit.This is accord with true experiment.