摘要
给出了焊接残余应力对压力容器疲劳裂纹扩展的影响,采用断裂力学理论分析疲劳行为,引用了裂纹张开率U和有效应力强度因子幅值△Keff的概念.
The effect of welding residual stress on relive fatigue crack growth of the pressure vessel is analyzed. The theory of fracture mechanics is adopted to analyze fatigue behavior. The concepts of crack opening ratio and effective stress intensity range are introduced.
出处
《吉林化工学院学报》
CAS
2007年第2期61-63,共3页
Journal of Jilin Institute of Chemical Technology
关键词
焊接残余应力
疲劳裂纹扩展
压力容器
welding residual stress
fatigue crack growth
pressure vessel
