| 基于闭合的疲劳裂纹全寿命估算模型 |
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| 引用本文： | 李杰. 基于闭合的疲劳裂纹全寿命估算模型[J]. 北京服装学院学报(自然科学版), 1999, 19(1): 77-82 |
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| 作者姓名： | 李杰 |
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| 作者单位： | 北京服装学院基础课部 |
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| 摘 要： | 在工程实际中，以往对元件和构件的疲劳全寿命计算，往往是将整个疲劳寿命分成裂纹形成寿命和裂纹扩展寿命２个阶段来考虑的，由于在选择初始裂纹长度这一问题上的不一致，因此得到的有很大的差别。本建立了一种简要易行的疲劳裂纹全寿命估算模型，这对解决工程实际问题具有一定的现实意义。
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| 关 键 词： | 短裂纹 疲劳寿命 疲劳裂纹 裂纹扩展 |
Fatigue Life Calculation Model Basedon the Crack Close Theory |
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| Li Jie. Fatigue Life Calculation Model Basedon the Crack Close Theory[J]. Journal of Beijing Institute of Clothing Technology, 1999, 19(1): 77-82 |
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| Authors: | Li Jie |
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| Abstract: | In engineering ,the fatigue life of engineering structure is very important.Before,the calculation of fatigue life was often divided into two pods, one is crack initiationlife, another is crack propagation life. But the results were much different because theselected crack length a0 was different. So it wasn't well solution for the fatigue lifecalculation of engineering structure. This paper presents a fatigue life calculation model,it provides solutions to some engineering problems. |
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| Keywords: | short crack fatigue life fatigue crack crack propagation |
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