Mismatch Effect on the Mixed Mode Type Creep Crack within Weldment

摘要：

　　Creep crack within weldments are very common in engineering practices,and the cracking location in these welding structures always appears at the HAZ location.The mismatch effect on the mixed mode creep crack is still not clear in these available literatures.The aim of this paper is to investigate the mismatch influence on the creep crack of mixed mode thoroughly.A mixed mode creep crack within HAZ is established in this paper.The leading factor that dominates the creep crack tip field under mixed loading mode is studied.The influences of mismatch effect on mode mixity,stress distribution and stress triaxiality are proposed.The difference of mixed mode creep crack and normal mode Ⅰ or mode Ⅱ creep crack are compared.The influence of mixity factor on the transient and steady state creep of crack tip are also analyzed.

关键词： Mismatch effect Stress field Heat affected zone Mixed mode Creep crack

作者: Junhui Zhang Yanwei Dai

作者单位: School of Civil Engineering,North China University of Technology,Beijing,China Department of Engineering Mechanics,AML,Tsinghua University,Beijing,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: 281-285

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）