| PD3钢轨钢接触疲劳裂纹扩展行为研究 |
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| 引用本文： | 盛光敏,范镜泓,彭向和. PD3钢轨钢接触疲劳裂纹扩展行为研究[J]. 金属学报, 2000, 36(2): 131-134 |
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| 作者姓名： | 盛光敏 范镜泓 彭向和 |
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| 作者单位： | 重庆大学材料科学与工程学院,重庆,400044 |
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| 摘 要： | 从滚动-滑动接触应力场出发,考虑残余应力和裂纹面间的摩擦力,对PD3钢轨钢提出了一个简单实用的接触疲劳裂纹扩展模型.计算结果表明,裂纹扩展的有效驱动力随残余压应力及裂纹面间摩擦力的增大而减小,实验结果与理论计算结果基本吻合.
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| 关 键 词： | 钢轨钢 接触疲劳 裂纹扩展 残余应力 |
| 文章编号： | 0412-1961(2000)02-0131-04 |
| 修稿时间： | 1999-08-18 |
INVESTIGATION OF CONTACT FATIGUE CRACK GROWTH BEHAVIORS FOR PD3 RAIL STEEL |
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| SHENG Guangmin,FAN Jinghong,PENG Xianghe. INVESTIGATION OF CONTACT FATIGUE CRACK GROWTH BEHAVIORS FOR PD3 RAIL STEEL[J]. Acta Metallurgica Sinica, 2000, 36(2): 131-134 |
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| Authors: | SHENG Guangmin FAN Jinghong PENG Xianghe |
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| Abstract: | Based on the stress field of rolling-sliding contact and considering the residual stress and friction between the crack interfaces, a simple and useful model describing the contact fatigue crack growth is developed for PD3 rail steel. The calculated results from the model show that the effective driving force of crack growth decreases with the increment of residual compressive stress and the friction force acting between the crack interfaces, which is essentially identical with the experimental observations. |
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| Keywords: | rail steel contact fatigue crack growth residual stress |
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