摘要
采用概率有限元和可靠性分析相结合的方法 ,将影响裂纹扩展的主要随机因素作为随机变量处理 ,研究裂纹扩展失效概率的计算问题。文中采用梯度投影方法 ,对各种主要随机因素作为随机变量时用于失效概率计算的可靠性指标进行了计算 。
Treating many factors which mainly affect the fatigue crack growth as random variable, the probabilistic finite element method and reliability analysis are combined to study the failure probability for fatigue crack growth. The gradient projection algorithm is used to calculate the reliability index that is used to calculate the probability of fatigue failure. Based on this result the failure probability for fatigue crack growth is obtained by the First-Order reliability method.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2001年第1期35-37,84,共4页
Journal of Mechanical Strength
