Crack propagation and arrest simulation of X90 gas pipe

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• 作者：Fengping Yang^a ; ^{yyffpp@163.com} ; Chunyong Huo^a ; Jinheng Luo^a ; He Li^a ; Yang Li^b
• 关键词：X90 gas pipe ; Damage strain energy per volume ; Plastic uniform percentage elongation ; Crack arrest criterion ; Fracturecharacteristic length
• 刊名：International Journal of Pressure Vessels and Piping
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：149
• 期：Complete
• 页码：120-131
• 全文大小：2816 K
• 卷排序：149

文摘

A damage model was suggested as crack arrest criterion. Plastic uniform elongation and damage strain energy density are material parameters. Fracture characteristic length is suggested to be largest mesh size in cracking path. Crack propagating simulation with coupling of pipe and gas was realized in ABAQUS. A Chinese X90 steel pipe with 12 MPa internal pressure can arrest cracking itself.