The study of fatigue crack growth shape under mode I constant amplitude loading
(0) An experimental study was performed to study crack shape evolution of 16MnR pressure vessel steel by adopted compact tension (CT) specimens under Mode I constant amplitude loading. A data and numerical analysis of crack shape were conducted and the stress intensity factors (SIF) along crack front were calculated. The results revealed that curve crack shape could be described by elliptic equation properly and was similar in the stable crack growth stage. The initial crack shape was straight at the notch root, so SIF of the center was bigger than that of the surface. When the crack shape was curve, SIF of the center was smaller than that of the surface.
Crack shape Stress intensity factor Through-thickness crack Finite element analysis
Wenfeng Tu Zengliang Gao Zhaoji Hu
College of Environmental and Chemical Engineering, Nanchang University, Nanchang, China College of mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
国际会议
大连
英文
852-855
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）