摘要
阐述了应力强度因子门槛值面△K_(th)的重要性，讨论了理论门槛值的概念，分析了工程门槛值的局限性，提出了理论门槛值的求解方法，实例分析显示了理论门槛值研究，无论对于工程应用或理论研究均具有重要意义。
In this paper, the importance of stress intensity factor threshold Kth is elaborated, the limi-tation of engineering threshold is analysised, the concept of the theoretical threshold is discussed and amethod that the theoretical threshold can be calcuIated with is found. Practical examples have shown thatthe research of theoretical threshold is significance to engineering use and theoretical analysis
出处
《强度与环境》
北大核心
1995年第4期12-16,共5页
Structure & Environment Engineering
关键词
应力强度因子
阈值
裂纹扩展
Stress intensity factor, ^+Threshold value, Crack propagation
