基于随机振动精细算法的25T型软卧车构架疲劳寿命仿真  

Simulation on Fatigue Life of Bogie Frames for 25T Cushioned Sleeping Cars Based on Precise Algorithm of Random Vibration

作　　者：佟维[1] 郭翰飞[1] 刘晓雪[1,2] 张有为[2] 

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]大连理工大学运载工程与力学学部,辽宁大连116024

出　　处：《铁道车辆》2014年第8期10-12,5,共3页Rolling Stock

摘　　要：介绍了轨道客车结构疲劳分析全过程仿真计算系统,利用该系统建立了25T型软卧车的整车动力学精细模型,采用AAR标准提供的6级线路谱为激励载荷,完成了该车在3个速度等级下的随机应力仿真计算,给出了构架较详细的寿命分布,讨论了运行速度与寿命的关系,并在结构改进策略方面提出了建议。The simulation calculation system for the full process of structure fatigue analysis of rail passenger car is described.The dynamics precise model of integral 25 T cushioned sleeping cars is set up with the system.The level 6 track spectrum provided in the AAR Standard is used as the excitation load.The random stress simulation calculation in 3 speed grades of the car is completed.The detailed service life distribution of the bogie frame is given.The relation between the operation speed and the service life is discussed.And suggestions are given in the structure improvement strategy.

关 键 词：疲劳 随机应力 构架 铁道车辆 

分 类 号：U270.331.8[机械工程—车辆工程]