浏览全部资源
扫码关注微信
基于多轴振动环境再现的地铁车辆排障器寿命评估研究
A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction
- 机车电传动 2023年第6期 页码：88-98
- 作者机构：
1.西南交通大学 机械工程学院，四川 成都 610031
2.西南交通大学 轨道交通运载系统全国重点实验室，四川 成都;610031
- 作者简介：
吴兴文（1988—），男，博士，副教授，主要从事高频结构动力学、结构强度可靠性、智能运维方面的研究；E-mail: xingwen.wu@163.com
- 基金信息：国家重点研发计划项目(2018YFE0201401-01);国家自然科学基金项目(51805450);四川省基础研究计划项目(2020YJ0075)
DOI：10.13890/j.issn.1000-128X.2023.06.011
中图分类号： U231;U270.38纸质出版日期：2023-11-10，
收稿日期：2023-02-06，
修回日期：2023-07-19，
- 稿件说明：
扫 描 看 全 文
郑雨豪, 吴兴文, 刘阳, 等. 基于多轴振动环境再现的地铁车辆排障器寿命评估研究[J]. 机车电传动, 2023(6): 88-98.
ZHENG Yuhao, WU Xingwen, LIU Yang, et al. A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction[J]. Electric drive for locomotives,2023(6): 88-98.
郑雨豪, 吴兴文, 刘阳, 等. 基于多轴振动环境再现的地铁车辆排障器寿命评估研究[J]. 机车电传动, 2023(6): 88-98. DOI： 10.13890/j.issn.1000-128X.2023.06.011.
ZHENG Yuhao, WU Xingwen, LIU Yang, et al. A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction[J]. Electric drive for locomotives,2023(6): 88-98. DOI： 10.13890/j.issn.1000-128X.2023.06.011.
摘要
车辆服役过程中，由于轮轨间的高频激励，极易引发结构共振疲劳问题。文章针对某地铁车辆排障器的疲劳开裂问题，开展了排障器的振动疲劳试验，发现了线路上通过频率为93 Hz的钢轨波磨是引发结构共振疲劳的主要原因。针对试验研究方法存在的传感器布置数量有限、成本较大等问题，文章从仿真分析角度，提出了一种基于多轴振动环境再现的地铁车辆排障器寿命评估方法。首先，建立了基于虚拟激励法的排障器随机振动模型，该模型可以很好地再现排障器的实际振动环境；然后，通过遗传算法对模态阻尼比进行优化，使得仿真和实测响应结果具有较好的一致性，验证了建模方法的正确性；最后，利用多核并行计算的方法实现了排障器任意位置的全程损伤和疲劳寿命计算，显著提高了仿真计算的效率。结果表明：排障器焊缝拐角处为其结构的薄弱位置，其全程工况损伤值为6.25E-03，疲劳寿命为0.60万km，远低于设计使用寿命的360万km，通过上述方法评估出来的排障器最大损伤位置与结构实际破坏位置相同，进一步证明了此方法的正确性。
Abstract
During the operation
the resonance fatigue of the structure is easily caused by the high-frequency wheel-rail excitation. In this study
the vibration fatigue test with a metro cowcatcher was conducted for the fatigue cracking found in a certain metro cowcatcher. It was found that the resonance fatigue of the structure was mainly caused by the rail corrugation with the frequency of 93 Hz on the line. Given the high cost and limited number of sensors in the experimental research method
a method to assess the life of the metro cowcatcher in the reproduced multi-axis vibration environment was proposed based on the simulation analysis. Firstly
a random vibration model of the cowcatcher was created based on the pseudo-excitation method
which can well reproduce the actual vibration environment of the cowcatcher. Then
the modal damping ratio was optimized by the genetic algorithm
improving the consistency between the simulation and measured response results
and proving the correctness of the modeling method. At last
the whole-course damage and fatigue life of any part of the cowcatcher was calculated by the multi-core parallel computing method
significantly improving the efficiency of simulation calculation. The results show that the weld corner of the cowcatcher is the weakness of the structure
the whole-course damage under operating condition is 6.25E-03
and the fatigue life is 6000 km
which is far lower than the design life of 3 600 000 km. The location of the largest damage on the cowcatcher found by the above method is the same as that of the actual damage to the structure
further proving the correctness of this method.
关键词
地铁车辆疲劳试验排障器多轴振动模型遗传算法并行计算疲劳寿命
Keywords
metro vehiclefatigue testmulti-axis vibration model of cowcatchergenetic algorithmparallel computingfatigue life
references
石怀龙, 王建斌, 戴焕云, 等. 地铁车辆轴箱吊耳断裂机理和试验研究[J]. 机械工程学报, 2019, 55(6): 122-128.
SHI Huailong, WANG Jianbin, DAI Huanyun, et al. Crack mechanism and field test of the metro safety hanger[J]. Journal of mechanical engineering, 2019, 55(6): 122-128.
连青林, 刘志明, 王文静. 提速客车转向架安全吊座疲劳失效机理与改进方法[J]. 交通运输工程学报, 2018, 18(1): 71-78.
LIAN Qinglin, LIU Zhiming, WANG Wenjing. Fatigue failure mechanism and improvement method of safety suspender mounting base of speed-up passenger car bogie[J]. Journal of traffic and transportation engineering, 2018, 18(1): 71-78.
宋庆伟, 张大福, 王建斌, 等. 轴箱吊耳振动测试及共振疲劳评估[J]. 机车电传动, 2019(6): 134-139.
SONG Qingwei, ZHANG Dafu, WANG Jianbin, et al. Vibration testing and resonance fatigue assessment of axlebox lifting lug[J]. Electric drive for locomotives, 2019(6): 134-139.
谢晨希, 陶功权, 温泽峰. 地铁车辆制动管路动应力分析及结构优化[J]. 机械工程学报, 2021, 57(10): 118-125.
XIE Chenxi, TAO Gongquan, WEN Zefeng. Dynamic stress analysis and structural optimization of braking pipeline of metro vehicle[J]. Journal of mechanical engineering, 2021, 57(10): 118-125.
乐柄伸, 吴兴文, 黄运华. 高速列车车体动态薄弱位置及特征应力谱研究[J]. 机械, 2020, 47(9): 9-16.
YUE Bingshen, WU Xingwen, HUANG Yunhua. Analysis on dynamic critical position and characteristic stress spectrum of high-speed train car body[J]. Machinery, 2020, 47(9): 9-16.
卢耀辉, 向鹏霖, 曾京, 等. 高速列车转向架构架动应力计算与疲劳全寿命预测[J]. 交通运输工程学报, 2017, 17(1): 62-70.
LU Yaohui, XIANG Penglin, ZENG Jing, et al. Dynamic stress calculation and fatigue whole life prediction of bogie frame for high-speed train[J]. Journal of traffic and transportation engineering, 2017, 17(1): 62-70.
WU Xingwen, CHI Maoru, GAO Hao. Damage tolerances of a railway axle in the presence of wheel polygonalizations[J]. Engineering failure analysis, 2016, 66: 44-59.
朱涛, 肖守讷, 阳光武, 等. 基于频域法的转向架构架疲劳寿命研究[J]. 机械强度, 2016, 38(1): 160-166.
ZHU Tao, XIAO Shoune, YANG Guangwu, et al. Study on fatigue life in frequency domain for bogie frame[J]. Journal of mechanical strength, 2016, 38(1): 160-166.
李凡松, 邬平波, 曾京, 等. 构架三种常用疲劳强度校核方法对比研究[J]. 机械工程学报, 2014, 50(14): 170-176.
LI Fansong, WU Pingbo, ZENG Jing, et al. Study on the differences between the three common fatigue strength analysis methods for bogie frame[J]. Journal of mechanical engineering, 2014, 50(14): 170-176.
SHI Huailong, WU Pingbo. Flexible vibration analysis for car body of high-speed EMU[J]. Journal of mechanical science and technology, 2016, 30(1): 55-66.
0
浏览量
10
下载量
0
CSCD
0
CNKI被引量
- 网络PDF下载
- WORD下载
- Meta-XML下载
- BibTeX下载
- Endnote下载
- RefMan 下载
- NoteExpress下载
- NoteFirst下载
关联资源
相关文章
相关作者
相关机构
- 技术支持由北京北大方正电子有限公司提供 湘ICP备20010475号-1
京公网安备11010802024621 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies