磨损对钢轨滚动接触疲劳损伤的影响
Effect of Wear on Rolling Contact Fatigue of Rail
摘 要
通过对广深铁路钢轨疲劳斜裂纹与钢轨侧磨的现场调查及钢轨滚动疲劳模拟试验,研究了钢轨滚动接触疲劳损伤与磨损之间的作用关系,分析了轮、轨滚动疲劳过程中钢轨磨损率对疲劳裂纹形成及裂纹扩展寿命的影响.结果表明:钢轨磨损严重时,疲劳斜裂纹损伤就表现轻微,钢轨滚动疲劳损伤与磨损之间表现为相互竞争与制约的耦合作用关系;通过增加磨损率能减轻钢轨的滚动疲劳损伤,有利于延长钢轨的疲劳裂纹扩展寿命.
疲劳裂纹
磨损
疲劳寿命
rail
fatigue crack
wear
fatigue life
Abstract
The relationship between rolling contact fatigue damage and wear of rail had been explored by the investigation on rail fatigue oblique crack and side wear volume on Guangzhou-Shenzhen high-speed railway and rolling simulation test of rail.The effects of wear rate of rail on formation of fatigue crack and crack propagation life had been analyzed in the rolling wear of wheel-rail process.The results indicate that when rail wear was severe,rail fatigue oblique crack was relatively slight.The relationship between rolling contact fatigue crack damage and rail wear was manifested as mutual competitive and restrictive coupling mechanisms.In the practical application,increasing wear rate of rail could alleviate rolling contact fatigue of rail and prolong the fatigue life.
中图分类号 TH117.3
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(50675183);国家高技术研究发展计划(863计划)资助项目(2009AA04Z424);西南交通大学创新团队培育计划资助项目(2007IRT01)
收稿日期 2008/12/1
修改稿日期 2009/7/14
网络出版日期
作者单位点击查看
备注王文健(1980-),男,山东费县人,讲师,博士.
引用该论文: WANG Wen-jian,GUO Jun,LIU Qi-yue,ZHU Min-hao. Effect of Wear on Rolling Contact Fatigue of Rail[J]. Materials for mechancial engineering, 2010, 34(1): 17～19
王文健,郭俊,刘启跃,朱旻昊. 磨损对钢轨滚动接触疲劳损伤的影响[J]. 机械工程材料, 2010, 34(1): 17～19
被引情况:
【1】刘亮,王文健,郭俊,刘启跃, "钢轨踏面斜裂纹扩展寿命的预测",机械工程材料 36, 26-30(2012)
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参考文献
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【2】DONZELLA G,FACCOLI M,GHIDINI A,et al.The competitive role of wear and RCF in a rail steel[J].Engineering Fracture Mechanics,2005,72:287-308.
【3】邢澍.摩擦疲劳学——一个新的学科[J].国外铁道车辆,1995(1):30-33.
【4】王文健.轮轨滚动接触疲劳与磨损耦合关系及预防措施研究[D].成都:西南交通大学,2008.
【5】刘启跃,张波,周仲荣.铁路钢轨损伤机理研究[J].中国机械工程,2002,13(18):1596-1599.
【6】PARIS P C,ERDOGAN F.A critical analysis of crack propagation laws[J].Journal of Basic Engineering,1963,85:528-534.
【7】王文健,刘启跃.PD3和U71Mn钢轨钢疲劳裂纹扩展速率研究[J].机械强度,2007,29(6):1026-1029.
【8】KAPOOR A,FLETCHER D I,FRANKLIN.The role of wear in enhancing rail life[J].Tribology Research and Design for Engineering Systems,2003:331-340.
【9】KAPOOR,SCHMID,FLETCHER D I.Managing the critical wheel/rail interface[J].Railway Gazette International,2002,158(1):25-28.
【10】王文健,陈明韬,郭俊,等.高速铁路钢轨打磨技术及其应用[J].西南交通大学学报,2007,42(5):574-577.
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