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。
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.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1996年第3期302-305,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金
关键词
断裂力学
可靠性
裂纹扩展
probability
fracture mechanics
relibility
crack propagation
