铁路货车车体线路动态响应仿真与验证

于跃斌; 赵尚超; 李向伟; 李强

doi:10.3969/j.issn.0258-2724.20170412

铁路货车车体线路动态响应仿真与验证

doi: 10.3969/j.issn.0258-2724.20170412

于跃斌^1,2,,
赵尚超²,
李向伟^2, ,,
李强¹

基金项目: 铁道部科技研究开发基金资助项目（2011J014-B）

详细信息

作者简介:
于跃斌（1970—），男，教授级高级工程师，博士研究生，研究方向为结构强度检测，E-mail：yyb0010@163.com

通讯作者:
李向伟（1968—），男，教授级高级工程师，研究方向为焊接结构疲劳评估，E-mail：xw_li@126.com

计量
- 文章访问数: 397
- HTML全文浏览量: 198
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2017-06-06
- 修回日期: 2018-06-05
- 网络出版日期: 2018-07-11
- 刊出日期: 2019-06-01

Simulation and Verification of Dynamic Response of Railway Wagon on Railway Track

YU Yuebin^{1,2
,},
ZHAO Shangchao²,
LI Xiangwei^{2
, ,},
LI Qiang¹

摘要

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.
- 铁路货车 /
- 动态仿真 /
- 仿真与试验 /
- 全尺寸疲劳试验台架
Abstract: 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.
- rails /
- dynamic simulation /
- simulation and test /
- full-scale fatigue test rig

HTML全文

图 1 线路动态响应目标信号的迭代流程

Figure 1. Iterative flowchart of dynamic response target signal

下载: 全尺寸图片幻灯片

图 2 系统传递结构示意

Figure 2. Schematic diagram of system load transfer structure

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图 3 加载系统简化框图

Figure 3. Simplified block diagram of loading system

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图 4 试验台架仿真模型

Figure 4. Simulation model of test rig

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图 5 建立带焊缝的车体模型

Figure 5. Building the wagon body with welds

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图 6 心盘简化模型

Figure 6. Simplified model of the centre plate

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图 7 作动器分布图

Figure 7. Disposition of actuators

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图 8 摇枕垂向加速度对比

Figure 8. Comparison of vertical acceleration of bolster

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图 9 摇枕横向加速度对比

Figure 9. Comparison of lateral acceleration of bolster

下载: 全尺寸图片幻灯片

图 10 车体枕梁垂向加速度对比

Figure 10. Comparison of vertical acceleration of body bolster

下载: 全尺寸图片幻灯片

图 11 车体枕梁横向加速度对比

Figure 11. Comparison of lateral acceleration of body bolster

下载: 全尺寸图片幻灯片

图 12 模拟摇枕振动加速度响应的PSD分析结果

Figure 12. PSD analysis results of acceleration response of dummy bolster

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图 13 车体枕梁垂向加速度对比的仿真结果

Figure 13. Comparison of vertical acceleration of body bolster with the simulation results

下载: 全尺寸图片幻灯片

图 14 车体枕梁横向加速度对比的仿真结果

Figure 14. Comparison of lateral acceleration of body bolster with the simulation results

下载: 全尺寸图片幻灯片

图 15 仿真与试验动应力对比

Figure 15. Stress comparison between simulation and test

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表 1 模态频率结果对比

Table 1. Results comparison of modal frequency

振型系统试验模态系统仿真模态

侧滚 1.25 1.45
扭转 4.52 4.66

下载: 导出CSV

表 2 车体枕梁振动加速度的统计结果

Table 2. Statistical results of acceleration of body bolster

测点编号 RMS RMS误差/%
试验仿真

AZN11 0.040 0.038 4.25
AYN11 0.014 0.013 8.57

下载: 导出CSV

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