A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction

ZHENG Yuhao; WU Xingwen; LIU Yang; CHI Maoru; LIANG Shulin

doi:10.13890/j.issn.1000-128X.2023.06.011

您当前的位置：

首页 >

文章列表页 >

A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction

Railway Rolling Stock | 更新时间：2024-08-02

- A study on life assessment of metro cowcatcher based on multi-axis vibration environment reconstruction
- Electric Drive for Locomotives Issue 6, Pages: 88-98(2023)
- 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：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2023.06.011
  CLC： U231;U270.38
- Published：10 November 2023，
  
  Received：06 February 2023，
  
  Revised：19 July 2023，
- 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.

Views

下载量

CSCD

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research on Anti-fatigue Technology for Metro Bogie Bolster

Research on the prediction algorithm of tread wear for locomotive wheels based on GA-ridge regression analysis

Arcing detection method of metro pantograph based on improved yolov4-tiny

Study on abnormal abrasion of metro pantograph

Fatigue life study of the door on the new-type 160 km/h railway box wagon

Related Author

SUN Huidong

GAO Xiaoxia

GAO Feng

LI Zhiyong

FANG Xin

LIU Tong

CHENG Yaping

SUN Yuduo

Related Institution

Technology Research Center, CRRC Tangshan Co., Ltd.

Shanghai Depot, China Railway Shanghai Group Co., Ltd.

Metals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited

CRRC Changchun Railway Vehicles Co., Ltd.

Technology R&D Center, CRRC Braking System Co., Ltd.

⁰