| 以裂纹长度为参量的疲劳裂纹扩展随机模型 |
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| 引用本文： | 张建宇,费斌军.以裂纹长度为参量的疲劳裂纹扩展随机模型[J].北京航空航天大学学报,1996,22(3):302-305. |
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| 作者姓名： | 张建宇 费斌军 |
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| 作者单位： | 北京航空航天大学飞行器设计与应用力学系 |
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| 摘 要： | 建立了以裂纹长度为参数的疲劳裂纹扩展随机模型，给出了计算给定初始裂纹长度（定值或分布）和临界裂纹长度时的裂纹扩展时间分布的方法，以及计算给定初始裂纹长度（定值或分布）和寿命时的裂纹长度分布的方法，并给出了相应的计算实例。
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| 关 键 词： | 断裂力学 可靠性 裂纹扩展 |
STOCHASTIC MODEL OF FATIGUE CRACK GROWTH UNDER RANDOM LOADS |
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| Zhang Jianyu,Fei Binjun.STOCHASTIC MODEL OF FATIGUE CRACK GROWTH UNDER RANDOM LOADS[J].Journal of Beijing University of Aeronautics and Astronautics,1996,22(3):302-305. |
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| Authors: | Zhang Jianyu Fei Binjun |
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| Abstract: | Fatigue crack growth under the spectrum loading was discribed by a discrete stochastic process based on time.A random fatigue crack growth model was established with the discrete stochastic process based on the crack length.The method of identification of the stochastic process parameters from experimental crack growth data was given. |
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| Keywords: | probability fracture mechanics relibility crack propagation |
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