摘要
本文引用了有效应力强度因子幅值和裂纹张开率的概念,通过应力比的变化给出了焊接残余应力对压力容器疲劳裂纹扩展的影响系数。
This paper proposed a effect to relive fatigue crack growth rate of pressure vessel with welding residual stress. The theory of fracture mechanics was adopted for analysis fatigue behavior. The concrete Paris formula is established by the specimen tests data and model experiment. The concept of effective stress intensity range AK,,f and crack opening ratio U are iutroduced.
出处
《压力容器》
1996年第2期26-28,共3页
Pressure Vessel Technology
