紧急制动下货车车轮温度场和应力场的数值仿真研究  

Numerical Simulation of Temperature Field and Stress Field of Freight Car's Wheel Under Emergency Braking Condition

作　　者：郑红霞[1] 李智令[2] 刘玉军[1] 

机构地区：[1]鲁东大学交通学院,山东烟台264025 [2]鲁东大学学报编辑部,山东烟台264025

出　　处：《鲁东大学学报（自然科学版）》2008年第4期367-371,共5页Journal of Ludong University:Natural Science Edition

摘　　要：采用能量转换法确定了紧急制动下车轮的热流密度,运用有限元数值模拟技术,数值仿真了紧急制动状况下货车车轮的温度场分布,并通过间接耦合法将温度场模拟结果作为应力场分析的边界条件,数值模拟了紧急制动下车轮热应力场分布规律,为进一步研究车轮的热疲劳提供定量分析的依据.The heat flux density under the emergency braking is determined by the method of energy conversion and the temperature field is also simulated based on FEM.Using the indirect coupling method,the distribution patterns of thermal stress field under urgent braking condition are simulated according to the temperature field simulation result as the boundary condition of the stress field analysis,which can provide a quantitative basis for the thermal fatigue analysis of freight car s wheel.

关 键 词：车轮 温度场 热应力场 有限单元法 

分 类 号：U270.33[机械工程—车辆工程]