基于RVRAP的动车组吊装结构随机疲劳寿命研究  

Research on Random Fatigue Life of Large-Scale Equipment of EMU Based on RVRAP

作　　者：刘晓雪[1] 刘雨辰 郭翰飞 张纪丰 程亚军 李娜 LIU Xiaoxue;LIU Yuchen;CUO Hanfei;ZHANG Jifeng;CHENG Yajun;LI Na(Zhan Tianyou College(CRRC College),Dalian Jiaotong University,Dalian 116028,China;CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062,China;Shenyang Locomotive Depot of China Railway Shenyang Bureau Group Co.,Ltd.,Shenyang 110021,China)

机构地区：[1]大连交通大学詹天佑学院(中车学院),辽宁大连116028 [2]中车长春轨道客车股份有限公司工程研究中心,吉林长春130062 [3]中国铁路沈阳局集团有限公司沈阳机务段,辽宁沈阳110021

出　　处：《大连交通大学学报》2025年第1期44-48,120,共6页Journal of Dalian Jiaotong University

基　　金：辽宁省教育厅科学研究项目(JYTMS20230027)。

摘　　要：以IEC61373:2010提供的模拟长寿命随机振动加速度谱密度作为激励,利用基于虚拟激励法开发的适用于轨道车辆系统随机振动分析软件(RVRAP)对动车组吊装结构进行疲劳寿命预测,并与商用分析软件计算的随机应力结果进行对比。分析结果表明:两种软件计算得到的结构关键节点随机应力响应的最大误差为12%,并且RVRAP所需时长仅为商用软件的5.4%,大幅减少了计算时间,RVRAP与三区间法的疲劳评估结果一致,证明了RVRAP的有效性。With the increase in velocity and the development of lightweight designs for vehicles,the risk of exposure of large equipment under the vehicle to the vibration environment is increased,and the resulting failures are also gradually increased.The random vibration simulations for large-scale equipment of EMU are carried out by using the simulated long-life testing acceleration spectral density(ASD)of standard IEC 61373:2010 as excitation.The random vibration analysis of large-scale equipment of the EMU is carried out by using the railway vehicles random analysis program(RVRAP),which is developed based on PEM for the random vibration analysis of rail vehicles compared and analyzed with the random response results of the commercial software.Compared with the random response results of commercial software widely used at present,the random response rule is analyzed,and the fatigue life of the structure is predicted.The maximum error in the random stress response of the key nodes of the structure calculated by both methods is 12%,the required time for RVRAP is only 5.4% of that of commercial software,and the fatigue evaluation results are consistent.

关 键 词：动车组吊装结构 随机振动 RVRAP 随机疲劳寿命 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]