%A Wuchao YANG, Xudong QIAN %T Ductile extension of 3-D external circumferential cracks in pipe structures %0 Journal Article %D 2011 %J Front. Struct. Civ. Eng. %J Frontiers of Structural and Civil Engineering %@ 2095-2430 %R 10.1007/s11709-011-0115-9 %P 294-303 %V 5 %N 3 %U {https://journal.hep.com.cn/fsce/EN/10.1007/s11709-011-0115-9 %8 2011-09-05 %X
This study investigates the ductile fracture resistance of 3-D external circumferential cracks in the wall of a steel pipe under remote tension, using a damage-mechanism model originally proposed by Gurson and Tvergaard. The ductile crack extension utilizes an element extinction technique implemented in the computational cell framework. The key parameter for the computational cell method, i.e., the initial porosity ratio