含缺陷的30NiCrMoV12车轴钢的多变量疲劳性能研究

doi:10.3901/JME.2023.14.237

机械工程学报 ›› 2023, Vol. 59 ›› Issue (14): 237-244.doi: 10.3901/JME.2023.14.237

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含缺陷的30NiCrMoV12车轴钢的多变量疲劳性能研究

周素霞^1,2, 段粟宇^1,2, 吴毅³, 孙宇铎³, 卢俊霖^1,2

1. 北京建筑大学机电与车辆工程学院北京 100044;
2. 北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室北京 100044;
3. 中国铁道科学研究院集团有限公司金属及化学研究所北京 100081

收稿日期:2022-06-21 修回日期:2023-01-15 出版日期:2023-07-20 发布日期:2023-08-16
通讯作者: 段粟宇(通信作者),女,1998年出生。主要研究方向为缺陷车轴疲劳性能。E-mail:1589529240@qq.com
作者简介:周素霞,女,1971年出生,博士,教授,硕士研究生导师。主要研究方向为结构疲劳与断裂、金属材料的微观损伤、车辆系统动力学。E-mail:sxzhou1971@163.com
基金资助:
国家自然科学基金(51875032)和铁科院院基金(2021YJ223)资助项目。

Multivariate Fatigue Performance Study of 30NiCrMoV12 Defective Axles

ZHOU Suxia^1,2, DUAN Suyu^1,2, WU Yi³, SUN Yuduo³, LU Junlin^1,2

1. School of Mechanical-Electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044;
2. Beijing Key Laboratory of Service Performance of Vehicles, Beijing University of Civil Engineering and Architecture, Beijing 100044;
3. Metal & Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081

Received:2022-06-21 Revised:2023-01-15 Online:2023-07-20 Published:2023-08-16

摘要/Abstract

摘要： 车轴遭受异物冲击缺陷存在多种形式，其中棱角冲击对车轴疲劳性能影响较大，会加速车轴的失效。为研究棱角冲击缺陷对车轴疲劳极限的影响，针对30NiCrMoV12车轴钢，采用软件模拟与疲劳试验相结合的方法，借助ABAQUS对冲击缺陷区域进行应力场分析，对预制好的缺陷车轴试样进行疲劳试验，依据试验结果采用近似欧文单侧公差极限法拟合各试样组疲劳P-S-N曲线，得到相应的疲劳极限。根据各试样组的疲劳试验结果预测全尺寸车轴疲劳极限。考虑冲击缺陷深度的分散性，对缺陷深度和全尺寸车轴疲劳极限两参数进行拟合。最后基于EI-HADDAD公式，建立含棱角冲击缺陷的30NiCrMoV12车轴钢的多变量疲劳极限预测模型。采用该模型能够快速预估含不同尺寸棱角缺陷的全尺寸车轴疲劳极限。

关键词: 高速列车车轴, 棱角冲击缺陷, 疲劳极限, 多变量模型

Abstract: There are many forms of foreign object impact defects on the axle, among which the angular impact has a greater impact on the fatigue performance of the axle and will accelerate the failure of the axle. In order to study the influence of angular impact defects on the fatigue limit of the axles, for the 30NiCrMoV12 axle steel, the combination of software simulation and fatigue test is adopted, the stress field analysis of the impact defect area is carried out with the help of ABAQUS, the fatigue test is carried out on the prefabricated defective axle sample, and the fatigue P-S-N curve of each sample group is fitted according to the test result of the approximate Owen one-side tolerance limit method, and the corresponding fatigue limit is obtained. The fatigue limit of the full-size axle is predicted based on the fatigue test results of each specimen group. Considering the dispersion of the impact defect depth, the two parameters of the defect depth and the fatigue limit of the full-size axle are fitted. Finally, based on the EI-HADDAD formula, a multivariate fatigue limit prediction model of 30NiCrMoV12 axle steel with angle impact defects is established. The model can be used to quickly predict the fatigue limit of full-size axles with different sizes of angular defects.

Key words: high speed train axles, angular impact defect, fatigue limit, multivariable mode

中图分类号:

U270

周素霞, 段粟宇, 吴毅, 孙宇铎, 卢俊霖. 含缺陷的30NiCrMoV12车轴钢的多变量疲劳性能研究[J]. 机械工程学报, 2023, 59(14): 237-244.

ZHOU Suxia, DUAN Suyu, WU Yi, SUN Yuduo, LU Junlin. Multivariate Fatigue Performance Study of 30NiCrMoV12 Defective Axles[J]. Journal of Mechanical Engineering, 2023, 59(14): 237-244.

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含缺陷的30NiCrMoV12车轴钢的多变量疲劳性能研究

Multivariate Fatigue Performance Study of 30NiCrMoV12 Defective Axles

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