A Theoretical Note on Mode I Crack Kinking and Branching
An energy-based fracture mode has been derived for the mode I crack kinking and branching. The classic Ji -integral has been further explored by a new partial integral path and the analytical solution of the energy release rate for crack kinking and branching from a mode-I crack tip has been established. The crack kinking/branching angle has also been analytically derived. It shows that the Griffith’s theorem and conservation law can be applied to both model I crack extension and model I crack kinking and branching. The branching mechanism for quasi-static mode-I crack has been theoretically investigated. The branching toughness and the K-based criterion for crack branching have been defined. The crack branching phenomena predicted by the present model are in well agreement with the experimental observations reported in the literatures.
Crack kinking Crack branching Crack-branching toughness Mixed-mode crack growth
Y. J. Xie X. Z. Hu X. H. Wang
Dept of Mechanical Engineering, Liaoning Shihua University, Fushun, 113001, LN, P. R. China School of Mechanical Engineering, The University of Western Australia, Perth, WA 6009, Australia
国际会议
沈阳
英文
314-318
2010-07-28（万方平台首次上网日期，不代表论文的发表时间）