浏览全部资源
扫码关注微信
电力机车车体关键部件疲劳全寿命评估方法
Life-cycle assessment method for key parts of an electric locomotive body
- 机车电传动 2022年第6期 页码：10-16
- 作者机构：
1.大功率交流传动电力机车系统集成国家重点实验室，湖南 株洲 412001
2.中车株洲电力机车有限公司 产品研发中心，湖南 株洲 412001
3.西南交通大学 牵引动力国家重点实验室，四川 成都;610031
- 作者简介：
朱 涛（1984—），男，博士，博士/硕士生导师，副研究员，主要从事列车碰撞动力学与被动安全防护、机车车辆结构剩余寿命评估方法与预测、载荷识别理论和轮轨力预测方法、机车车辆结构强度与轻量化设计方法； E-mail: zhutao034@swjtu.edu.cn
- 基金信息：国家自然科学基金项目(52175123);中国中车股份有限公司科技研究开发计划项目(2018CJA002-1)
DOI：10.13890/j.issn.1000-128X.2022.06.002
中图分类号： U260.32纸质出版日期：2022-11-10，
收稿日期：2021-03-26，
修回日期：2021-08-03，
- 稿件说明：
扫 描 看 全 文
曾燕军, 金希红, 朱涛, 等. 电力机车车体关键部件疲劳全寿命评估方法[J]. 机车电传动, 2022,(6):10-16.
ZENG Yanjun, JIN Xihong, ZHU Tao, et al. Life-cycle assessment method for key parts of an electric locomotive body[J]. Electric drive for locomotives, 2022,(6):10-16.
曾燕军, 金希红, 朱涛, 等. 电力机车车体关键部件疲劳全寿命评估方法[J]. 机车电传动, 2022,(6):10-16. DOI： 10.13890/j.issn.1000-128X.2022.06.002.
ZENG Yanjun, JIN Xihong, ZHU Tao, et al. Life-cycle assessment method for key parts of an electric locomotive body[J]. Electric drive for locomotives, 2022,(6):10-16. DOI： 10.13890/j.issn.1000-128X.2022.06.002.
摘要
针对电力机车车体在线路循环激励作用下的疲劳裂纹失效问题，对关键部件进行了动应变测试，结合标准载荷，研究了其疲劳全寿命。首先，以某电力机车车体为研究对象，对关键部件进行了线路动应变测试，并对测试数据进行低通滤波；其次，对滤波结果进行雨流计数，基于国际焊接协会（International Institute of Welding，IIW）标准确定测点焊缝材料参数，并按照Palmgren-Miner线性累积损伤理论进行了关键部件疲劳裂纹萌生寿命计算；然后，以车体枕梁和垂向减振器安装座的底架局部结构为例，建立了关键部件裂纹扩展仿真子模型，并基于EN 12663标准确定了子模型载荷工况；最后，在垂向减振器动应变测点位置插入初始裂纹，基于断裂力学方法计算了疲劳裂纹扩展寿命，从而获取了车体垂向减振器安装座疲劳全寿命数据。研究结果表明，电力机车车体垂向减振器安装座在既有线路上的疲劳裂纹萌生寿命为6.86×10
7
公里；具有2 mm表面半长、0.8 mm深的初始半椭圆型表面裂纹的电力机车车体，在EN 12663标准要求的载荷条件下，至少还能承受4.18×10
7
次载荷循环才会完全丧失承载能力。研究结果为必要的车体结构改进提供了可靠的试验和仿真依据，为评定机车运营中车体的安全可靠性提供了极强的指导作用和参考价值。
Abstract
In respect of the fatigue crack failure of the electric locomotive body under the cyclic excitation
the dynamic strain test was carried out on the key parts
and the fatigue life of the locomotive body was researched based on standard loads. Firstly
the body of an electric locomotive was taken as the research object
the dynamic strain test of the key parts was carried out
and the test data were filtered by low-pass filter. Secondly
the rainflow counting was carried out on the filtering results
and the parameters of the welding material at the measuring point were determined based on the IIW (International Institute of Welding) standard. The fatigue crack initiation life of the key parts was calculated according to the Palmgren-Miner linear cumulative damage theory. Then
the body bolsters and the local structure of the underframe of the vertical damper holder were taken as examples
the sub-model of crack propagation simulation of key parts was established
and the load conditions of the sub-model were determined based on the EN 12663 standard. Finally
the initial crack was inserted at the dynamic strain measuring point of the vertical damper
and the fatigue crack propagation life was calculated based on the fracture mechanics
thereby obtaining the fatigue life data of the vertical damper holder of the body. The results show that the fatigue crack initiation life of the vertical damper holder is 6.86×10
7
km. Under the load conditions required by the EN 12663 standard
the electric locomotive body with an initial semi-elliptical surface crack of 2 mm in half length and 0.8 mm in depth can bear at least 4.18×10
7
load cycles before it completely loses its bearing capacity. The research results provide reliable test and simulation basis for the necessary improvement of the body structure
as well as a strong guidance and reference value for the evaluating the safety and reliability of the body in locomotive operation.
关键词
车辆工程电力机车车体动应变测试损伤累积断裂力学裂纹扩展仿真
Keywords
vehicle engineeringelectric locomotivebodydynamic strain testdamage accumulationfracture mechanicscrack propagation simulation
references
HYUN-KYU J, 阎锋. 电动车组车体底架疲劳裂纹评估[J]. 国外铁道车辆, 2020, 57(6): 38-43.
JUN H K, YAN Feng. Evaluation of fatigue crack on the underframe of EMU carbody[J]. Foreign Rolling Stock, 2020, 57(6): 38-43.
曾仲谋. 电力机车车体关键部位疲劳寿命预测[D]. 成都: 西南交通大学, 2004.
ZENG Zhongmou. The fatigue life prediction of key parts of electric locomotive[D]. Chengdu: Southwest Jiaotong University, 2004.
阳光武, 肖守讷, 金鼎昌. 机车车体牵引座及减振器座的疲劳寿命仿真分析[J]. 内燃机车, 2004(9): 16-18.
YANG Guangwu, XIAO Shoune, JIN Dingchang. Simulation analysis of the fatigue life of traction base and damper base of locomotive car body[J]. Diesel Locomotives, 2004(9): 16-18.
肖守讷, 周贝, 阳光武, 等. 机车车体关键部件的疲劳寿命预测与试验验证[J]. 铁道机车与动车, 2014(11): 35-37.
XIAO Shoune, ZHOU Bei, YANG Guangwu, et al. Fatigue life prediction and test verification of key components of locomotive car body[J]. Railway Locomotive and Motor Car, 2014(11): 35-37.
金希红, 曾燕军, 李祥涛, 等. 基于线路实测动应力谱的重载电力机车车体疲劳寿命预测[J]. 重庆理工大学学报(自然科学), 2020, 34(1): 44-50.
JIN Xihong, ZENG Yanjun, LI Xiangtao, et al. Fatigue life prediction of heavy electric locomotive based on line measured dynamic stress spectrum[J]. Journal of Chongqing University of Technology (Natural Science), 2020, 34(1): 44-50.
李新康, 王苏秦, 刘潮涛, 等. 地铁车辆铝合金车体端部底架子模型疲劳试验方法及寿命评估[J/OL]. 西南交通大学学报, 1-7. (2020-09-30) [2021-08-03]. http://kns.cnki.net/kcms/detail/51.1277.U.20200930.1054.004.htmlhttp://kns.cnki.net/kcms/detail/51.1277.U.20200930.1054.004.html.
LI Xinkang, WANG Suqin, LIU Chaotao, et al. Fatigue testing method and life evaluation of aluminum end underframe submodel of metro vehicles[J/OL]. Journal of Southwest Jiaotong University, 1-7. (2020-09-30) [2021-08-03]. http://kns.cnki.net/kcms/detail/51.1277.U.20200930.1054.004.htmlhttp://kns.cnki.net/kcms/detail/51.1277.U.20200930.1054.004.html.
王翔. 高速动车组车体关键位置疲劳裂纹扩展研究[D]. 北京: 北京交通大学, 2019.
WANG Xiang. Research on fatigue crack propagation in key position of high-speed EMU[D]. Beijing: Beijing Jiaotong University, 2019.
杨海宾, 朱涛, 肖守讷, 等. 基于结构应力法的车体结构疲劳裂纹扩展与剩余寿命评估[J]. 铁道机车车辆, 2019, 39(1): 15-20.
YANG Haibin, ZHU Tao, XIAO Shoune, et al. Fatigue crack propagation and residual life evaluation method of vehicle body structure based on structural stress method[J]. Railway Locomotive & Car, 2019, 39(1): 15-20.
党林媛. 高速列车车体铝合金裂纹扩展速率及疲劳寿命预测方法研究[D]. 成都: 西南交通大学, 2019.
DANG Linyuan. Research on prediction method of crack growth rate and fatigue life of aluminum alloy carbody in high speed train[D]. Chengdu: Southwest Jiaotong University, 2019.
HOBBACHER A F. New developments at the recent update of the IIW recommendations for fatigue of welded joints and components[J]. Steel Construction, 2010, 3(4): 231-242.
杨海宾. 铁路重载货车车钩剩余寿命研究[D]. 成都: 西南交通大学, 2019.
YANG Haibin. Study on the residual life of couples for railway heavy load vehicles[D]. Chengdu: Southwest Jiaotong University, 2019.
0
浏览量
64
下载量
0
CSCD
1
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