| 液体对轮轨滚动接触疲劳作用下的钢轨表面裂纹扩展机理的影响 |
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| 引用本文： | 刘园.液体对轮轨滚动接触疲劳作用下的钢轨表面裂纹扩展机理的影响[J].上海海事大学学报,2011,32(1):65-69. |
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| 作者姓名： | 刘园 |
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| 作者单位： | 上海海事大学,物流工程学院,上海,201306 |
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| 基金项目： | 交通运输部科技项目(2009-329-810-020); 上海市教育委员会重点学科建设项目(J50604); 上海海事大学校基金(20110037) |
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| 摘 要： | 为研究液体渗入钢轨表面裂纹对铁路造成的安全问题,通过计算液体介质渗入钢轨表面裂纹后不同接触载荷以及轮轨表面摩擦因数条件下裂纹尖端的应力强度因子,对裂纹扩展方向和扩展速率进行分析,总结滚动接触载荷作用下液体渗入对钢轨表面疲劳裂纹扩展机理的影响.
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| 关 键 词： | 滚动接触疲劳 液体渗入 赫兹接触 裂纹扩展机理 |
| 收稿时间： | 6/3/2010 5:47:28 PM |
| 修稿时间： | 9/9/2010 11:18:00 AM |
Effect of liquid penetration on rail crack propagation mechanism under rolling contact fatigue between wheel and rail |
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| Liu Yuan.Effect of liquid penetration on rail crack propagation mechanism under rolling contact fatigue between wheel and rail[J].Journal of Shanghai Maritime University,2011,32(1):65-69. |
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| Authors: | Liu Yuan |
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| Institution: | LIU Yuan(Logistics Engineering College,Shanghai Maritime Univ.,Shanghai 201306,China) |
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| Abstract: | In order to study the railway safety problem caused by rail surface crack with liquid penetration,analysis of crack propagation direction and rate is carried out by calculating stress intensity factor of crack tip with different contact loads and friction factor between wheel and rail after the liquid penetrates into the rail surface crack.The effect of liquid penetration on the rail fatigue crack propagation mechanism under rolling contact loads is summarized. |
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| Keywords: | rolling contact fatigue liquid penetration Hertz contact crack propagation mechanism |
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