| 疲劳裂纹扩展随机模型 |
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| 引用本文： | 张彦华, 贾安东,王立君.疲劳裂纹扩展随机模型[J].航空学报,1994,15(7):806-811. |
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| 作者姓名： | 张彦华 贾安东 王立君 |
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| 作者单位： | 北京航空航天大学，天津大学焊接教研室 |
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| 摘 要： | 应用随机理论与实验数据相结合的方法建立了疲劳裂纹扩展参量与时间关系的随机模型,根据随机模型建立了相应的随机微分方程,求解了有关的统计分布函数,并应用随机模拟方法再现了疲劳裂纹扩展的时间历程。
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| 关 键 词： | 材料疲劳 疲劳寿命－裂纹扩展 统计分布 |
STOCHASTIC MODEL FOR FATIGUE CRACK GROWTH |
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| Zhang Yanhua.STOCHASTIC MODEL FOR FATIGUE CRACK GROWTH[J].Acta Aeronautica et Astronautica Sinica,1994,15(7):806-811. |
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| Authors: | Zhang Yanhua |
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| Institution: | 1. Faculty 702 of Beijing University of Aeronautics &; Astronautics,Beijing,100083;2. Faculty of Welding Science,Tianjin University, Tianjin,300072 |
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| Abstract: | In order to estimate the statistical variability of the fatigue crack growth,a stochastic model for fatigue crack growth is proposed by means of combining stochastic theory with exper-imental results. A stochastic differential equation is derived from the stochastic model for fatigue crack growth, By using the solution of the stochastic differential equation, some distribution functions related to the fatigue crack growth are derived. Sample function of fatigue crack growth time histories is simulated as random process. |
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| Keywords: | fatigue(materials) fatigue life-crack propagation statistical distribution |
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