Modification Strain-Based Failure Assessment Diagram for High Strength Pipeline Steel

摘要：

　　The strain-based failure assessment diagram (SB-FAD) has been developed to predict failure due to high plastic strains.This paper validates the SB-FAD by finite element results for high strength pipeline steel (X80,X80HD,and X90) with four representative specimens (CT,CCP,DECP,and SCEP) of different crack sizes,respectively.The influence of material properties,geometries and crack sizes on failure assessment curves were compared and analyzed.Meanwhile,the modified Option-1 curve of SB-FAD is given in this paper.The results showed that the modified Option-1 curve of SB-FAD is more accurate when the value of abscissa Dr is small and more conservative when the value of abscissa Dr is large.

关键词： strain-based analysis failure assessment diagram pipeline steel fracture defects

作者: Junlin Shi Jianping Zhao Weijie Jiang

作者单位: School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing,Jiangsu,211816,China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 33-40

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）