| 疲劳短裂纹损伤参量研究 |
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| 引用本文： | 罗纯东.疲劳短裂纹损伤参量研究[J].辽宁石油化工大学学报,2006,26(3):76-80. |
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| 作者姓名： | 罗纯东 |
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| 作者单位： | 抚顺石化公司机动处,辽宁,抚顺,113006 |
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| 摘 要： | 用Monte Carlo方法建立了疲劳短裂纹演化过程的物理模型,实现了材料疲劳损伤微观物理过程。在此基础上对模拟结果进行了分析,探讨了表征材料损伤的疲劳损伤参数,提出一定面积上的裂纹总长度可以作为材料损伤的疲劳损伤参数。并拟合出裂纹总长度与材料相对寿命之间的关系及曲线,用于材料的疲劳寿命预测。
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| 关 键 词： | 疲劳短裂纹 Monte Carlo方法 疲劳损伤 |
| 文章编号： | 1672-6952（2006）03-0076-05 |
| 收稿时间： | 2006-06-21 |
| 修稿时间： | 2006-07-17 |
Damage Parameters of Short Fatigue Cracks |
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| LUO Chun-dong.Damage Parameters of Short Fatigue Cracks[J].Journal of Liaoning University of Petroleum & Chemical Technology,2006,26(3):76-80. |
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| Authors: | LUO Chun-dong |
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| Abstract: | A physical model describing an evolutive process of short fatigue cracks was built based on Monte Carlo method. The microcosmic physics process of material fatigue damage was demonstrated on screen. Then the simulated results were analyzed, and the fatigue damage parameters to stand for material damage were discussed. It is put forward that the total length of cracks in certain area can be used as material fatigue damage parameters. It is approximated that the formula and curve of relationship between total length of cracks and relative life of material, which can be used to predict .material life. |
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| Keywords: | Short fatigue cracks Monte Carlo method Fatigue damage |
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