铁路货车车体线路动态响应仿真与验证

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英文篇名：Simulation and Verification of Dynamic Response of Railway Wagon on Railway Track 作者：于跃斌 ; 赵尚超 ; 李向伟 ; 李强 英文作者：YU Yuebin;ZHAO Shangchao;LI Xiangwei;LI Qiang;School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University;CRRC Qiqihar Rolling Stock Co.Ltd.; 关键词：铁路货车 ; 动态仿真 ; 仿真与试验 ; 全尺寸疲劳试验台架 英文关键词：rails;;dynamic simulation;;simulation and test;;full-scale fatigue test rig 中文刊名：XNJT 英文刊名：Journal of Southwest Jiaotong University 机构：北京交通大学机械与电子控制工程学院;中车齐齐哈尔交通装备有限公司; 出版日期：2018-07-11 09:23 出版单位：西南交通大学学报 年：2019 期：v.54;No.247 基金：铁道部科技研究开发基金资助项目(2011J014-B) 语种：中文; 页：XNJT201903024 页数：7 CN：03 ISSN：51-1277/U 分类号：186-192

摘要

针对大系统仿真分析方法与试验结果出现偏差问题,基于实际线路测试数据,以车体子系统为仿真对象,辅助于模拟台架的试验数据,建立了26个自由度的多体仿真模型,实现了车体线路动态响应的仿真计算.结果表明:摇枕垂、横向加速度响应结果仿真与试验RMS (root mean square)误差最大值为9%.在1.5～15.0 Hz主要频率段,车体枕梁垂、横向振动加速度的试验结果和仿真结果的RMS误差低于8.57%,车体关键焊缝仿真与试验的动应力响应波形基本一致.通过与试验结果的对比验证,仿真结果基本反映了车体在实际线路运行时的动态响应情况.
        For resolving errors between a simulation analysis and the test results of a large system, a multi-body simulation model of a railway wagon with 26 degrees of freedom was created using test data from a real test rig on a railway track and by incorporating the wagon body's subsystems into the simulation object in order to realise a simulation calculation of the dynamic response of the railway wagon. The results show that the maximum RMS(root mean square) error between the simulation and the test of the wagon body bolster's vertical and lateral vibration acceleration is 9%. Furthermore, the RMS error between the simulation and test of the wagon body bolster's vertical and lateral vibration acceleration is less than 8.57% in the 1.5–15.0 Hz frequency range. Finally,the response signal waveforms of the dynamic stress of the simulation and that of the wagon body's key welds are almost identical. The comparison and validation of the simulation and test results show that the simulation results substantially reproduce the dynamic response conditions of the railway wagon running along a railway track.

引文

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