城铁车辆转向架端部支架结构强度及随机振动疲劳分析

Structural Strength and Random Vibration Fatigue Analysis of Bogie end Support of Urban Rail Vehicle

为了保证城铁车辆的运行安全,对其转向架端部支架进行结构强度及随机振动仿真分析十分必要。以某城铁车辆转向架三种型式的端部支架为研究对象,分别依据EN 13749标准和GB 21563标准,采用有限元仿真软件ANSYS对其进行结构强度及随机振动仿真分析,并结合材料的SN曲线进行线性累积损伤评估。结果表明,依据EN 13749标准进行静强度和准静态疲劳分析,三种型式的端部支架结构强度均满足设计要求;依据GB 21563标准进行随机振动疲劳分析,其中两种型式的端部支架焊缝损伤大于1,不满足安全运用设计要求。

In order to ensure the safety of urban rail vehicles,it is necessary to carry out the structural strength and random vibration simulation analysis of the bogie end bracket.Based on EN 13749 standard and GB 21563 standard,the finite element simulation software ANSYS was used to simulate the structural strength and random vibration of three types of end supports of a urban railway vehicle bogie,and the linear cumulative damage assessment was carried out based on the SN curve of the material.The results show that according to EN 13749 static strength and quasi-static fatigue analysis,the three types of end support structure strength meet the design requirements.Random vibration fatigue analysis was carried out according to GB 21563 standard.The weld damage of two types of end support was greater than 1,which did not meet the design requirements of safe operation.