The probability distribution of fatigue damage and the statistical moment of fatigue life

被引：5
|
作者：
Xiong, JJ
Gao, ZT
机构：
[1] Beijing University of Aeronautics and Astronautics,Research Center of Solid Mechanics
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 1997年 / 40卷 / 03期
关键词：
fatigue damage; fatigue life; stochastic differential equation; Markov process; probability distribution; statistical moment;
D O I：
10.1007/BF02916603
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The randomization of deterministic fatigue damage equation leads to the stochastic differential equation and the Fokker-Planck equation affected by random fluctuation. By means of the solution of equation, the probability distribution of fatigue damage with the change of time is obtained. Then the statistical moment of fatigue life in consideration of the stationary random fluctuation is derived. Finally, the damage probability distributions during the fatigue crack initiation and fatigue crack growth are given.
引用
收藏
页码：279 / 284
页数：6
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