| 复合应力状态下裂纹形成的行为 |
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| 引用本文： | 靳东来 刘汝锋. 复合应力状态下裂纹形成的行为[J]. 北京科技大学学报, 1996, 18(5): 486-490 |
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| 作者姓名： | 靳东来 刘汝锋 |
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| 作者单位： | 北京科技大学数力系 |
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| 摘 要： | 以应力场强法为基础，研究非对称缺口构件的裂纹形成部位和寿命，提出了应力场强函数σＦＤ，σＦＤ。该函数既考虑了危险部位处的应力值，又考虑了其附近损伤区的应力和应力梯度对裂纹形的贡献。
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| 关 键 词： | 应力场强法 非对称缺口 裂纹形成 构件 复合应力 |
Behavior of Fatigue Crack Formation under the Action of Combined Stresses |
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| Jin Donglai, Liu Rufeng, Chen Zhanghua. Behavior of Fatigue Crack Formation under the Action of Combined Stresses[J]. Journal of University of Science and Technology Beijing, 1996, 18(5): 486-490 |
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| Authors: | Jin Donglai Liu Rufeng Chen Zhanghua |
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| Abstract: | Formative position of fatigue crack, and fatigue life of asymmetric notched component are investigated.A stress field intensity function, which reflects effect of the equivalent stress at perilous point and that of the stresses and its gradient within the damage area on crack formation, is presented. |
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| Keywords: | stress field intensity method asymmetric notch crack formation equivalent stress stress gradient |
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