W300-1型扣件弹条疲劳寿命的预测和评估
CSTR:
作者:
作者单位:

1.上海材料研究所,上海 200437;2.上海消能减震工程技术研究中心,上海 200437;3.上海第二工业大学 环境与材料工程学院,上海 201209

作者简介:

刘艳(1985—),女,副研究员,硕士生导师,工学博士,主要研究方向为轨道结构工程.E-mail:15000200006@163.com

通讯作者:

李秋彤(1991—),女,助理研究员,工学博士,主要研究方向为轨道结构工程.E-mail:lqt910818@163.com

中图分类号:

U213.5+31

基金项目:

国家自然科学基金资助项目(51708422);上海市青年科技启明星基金(19QB1401100);上海市浦江人才计划(20PJ1417300)


Fatigue Life Prediction and Evaluation of the W300-1 Fastening Clip
Author:
Affiliation:

1.Shanghai Research Institute of Materials, Shanghai 200437, China;2.Shanghai Engineering Research Center of Earthquake Energy Dissipation, Shanghai 200437, China;3.School of Environmental and Material Engineering, Shanghai Second Polytechnic University, Shanghai 201209, China

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [21]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    为有效评估和预测W300-1型扣件弹条在实际工作状态下的疲劳寿命,综合考虑弹条材料的弹塑性力学特性及复杂接触关系,建立有限元模型;分析弹条在不同安装扭矩下的受力情况,并用数字图像相关(DIC)测试结果予以验证;基于京沪高铁实测轮轨力时程曲线,施加等效循环疲劳载荷谱,结合弹条材料应变-寿命曲线,预测弹条疲劳寿命;分析安装扭矩、疲劳载荷幅值、以及两者匹配关系(应力比)对弹条疲劳寿命的影响。结果表明:无论处于略微欠拧、正常安装或过拧状态,弹条危险点位置均位于跟端圆弧内表面,已发生塑性变形。弹条疲劳寿命随安装扭矩和疲劳载荷幅值的增加而降低,与危险点应力比呈线性关系。因此,为保证弹条的实际使用寿命,特别是在车速较高或波磨较严重的线路,建议弹条安装时安装扭矩不超过300 N·m。

    Abstract:

    To effectively evaluate and predict the fatigue life of the W300-1 fastening clip during service, a finite element model was established, by considering the elastic-plastic mechanical properties and nonlinear contact relations of the clip. The strain characteristics of the clip at different installation loads were analyzed, and the test results were verified based on digital image correlation (DIC) technology. The fatigue life of the clip was calculated by applying the fatigue load in combination with the strain-life curve based on the actual measurement wheel-rail force time-history curve of Beijing-Shanghai High Speed Railway. The influence of installation torque, fatigue cycle load amplitude and the matching relations between them (the stress ratio) on the fatigue life of the clip was analyzed. The results show that the lowest fatigue life is found at the heel of the clip, and plastic deformation occurs no matter in a state of slightly under-tightening installation, normal installation, or over-tightening installation. The fatigue life decreases with the increase of installation torque and fatigue load amplitude, but it is linearly proportional to the stress ratio at the dangerous point of the clip. Therefore, to ensure the actual service life of the clip, especially in high speed or serious corrugation lines, it is recommended that the installation torque of the clip should not exceed 300 N·m.

    参考文献
    [1] 肖宏, 马春生, 郭骁, 等. e型扣件弹条断裂原因频谱分析[J]. 同济大学学报(自然科学版), 2017,45(7):1000.
    [2] 刘小军. 重载铁路钢轨焊缝不平顺对扣件弹条动态应力的影响分析[D]. 成都: 西南交通大学, 2015.
    [3] 张松琦, 张远庆, 汝继来, 等. 扣件DI弹条非正常部位断裂原因分析及结构优化[J]. 铁道建筑, 2020, 60(3): 137.
    [4] 陈宪麦, 屈郑嘉, 陈文韬, 等. 地铁DTⅥ2扣件弹条力学特性及断裂研究[J]. 中南大学学报(自然科学版), 2019, 50(11): 2813.
    [5] XIAO Hong, GAO Xiaogang, WANG Haoyu, et al. Fatigue damage analysis and life prediction of e-clip in railway fasteners based on ABAQUS and FE-SAFE[J]. Advances in Mechanical Engineering, 2018, 10(3):2072045812.
    [6] MOHAMMADZADEH S, AHADI S, NOURI M. Stress-based fatigue reliability analysis of the rail fastening spring clip under traffic loads[J]. Latin American Journal of Solids and Structures, 2014, 11:993.
    [7] ANAT H, PHANASINDH P, NITIKORN N, et al. Influence of toe load on the fatigue resistance of elastic rail clips[J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2017. 232(4): 1078.
    [8] 向俊, 袁铖, 余翠英, 等. 高速铁路无砟轨道扣件弹条断裂原因分析[J]. 铁道科学与工程学报, 2019, 16(7): 1605.
    [9] 辛涛, 杨学敏, 肖宏, 等. 基于车轨耦合和扣件精细模型的弹条疲劳分析[J]. 中南大学学报(自然科学版), 2016, 47(12): 4270.
    [10] 王开云,蔡成标,朱胜阳. 铁路钢轨扣件系统垂向动力模型及振动特性[J]. 工程力学,2013,30(4): 146.
    [11] 尚红霞, 温泽峰, 吴磊, 等. 地铁扣件III型弹条失效有限元分析[J]. 工程力学, 2015,32(9): 210.
    [12] FERRE?O D, CASADO J A, CARRASCAL I A, et al. Experimental and finite element fatigue assessment of the spring clip of the SKL-1 railway fastening system[J]. Engineering Structures, 2019, 188:553.
    [13] 亓伟, 刘玉涛, 陈江, 等. 客货混运线路扣件弹条疲劳特性准静态分析[J]. 机械工程学报, 2018, 54(12): 1.
    [14] 李中, 郭瑞琴, 武帅. 弹条偏转和扣件松动对弹条扣压力的影响[J]. 铁道标准设计, 2016, 60(2): 47.
    [15] 林腾蛟, 沈亮, 赵俊渝. 风电增速箱输出级齿轮副疲劳寿命有限元分析[J]. 重庆大学学报(自然科学版), 2012, 35(1): 1.
    [16] HE Peiyu, HONG Rongjing, WANG Hua, et al. Fatigue life analysis of slewing bearings in wind turbines[J]. International Journal of Fatigue, 2018, 111:233.
    [17] GIANNELLA V, CITARELLA R, FELLINGER J, et al. LCF assessment on heat shield components of nuclear fusion experiment “Wendelstein 7-X” by critical plane criteria[J]. Procedia Structural Integrity, 2018,8:318.
    [18] 国家铁路局. 轮轨横向力和垂向力地面测试方法:TB/T 2489—2016[S]. 北京: 中国铁道出版社, 2017.
    [19] 姜子清, 司道林, 李伟, 等. 高速铁路钢轨波磨研究[J]. 中国铁道科学, 2014, 35(4): 9.
    [20] 刘卫星, 赵坪锐, 毕澜潇, 等. 高速铁路有砟轨道轮轨附加动荷载取值研究[J]. 铁道标准设计, 2020, 64(5): 50.
    [21] 刘欢, 陶功权, 蔡晶, 等. 车轮多边形态下机车轮轨动态响应研究[J]. 振动与冲击, 2020,39(16):16.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

刘艳,姜秀杰,李秋彤,赵威,刘欢. W300-1型扣件弹条疲劳寿命的预测和评估[J].同济大学学报(自然科学版),2021,49(8):1152~1161

复制
分享
文章指标
  • 点击次数:456
  • 下载次数: 1132
  • HTML阅读次数: 222
  • 引用次数: 0
历史
  • 收稿日期:2021-01-07
  • 在线发布日期: 2021-08-31
文章二维码