Numerical simulation on residual stress generation in crack tip of ASME P92 steel

被引：3
|
作者：
Jiang, Yunjian [1 ]
Jing, Hongyang [1 ]
Xu, Lianyong [1 ]
Zhao, Lei [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
来源：
ADVANCED DESIGN TECHNOLOGY | 2012年 / 421卷
关键词：
residual stress; creep crack growth; numerical simulation; ASME P92 steel; CREEP-BEHAVIOR;
D O I：
10.4028/www.scientific.net/AMR.421.522
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, the residual stress generated in the crack tip of compact specimens was investigated in order to analyze the effect of residual stress on the creep crack growth. Residual stresses were generated using loading in compression beyond yield and then unloading. The maximum region of residual stress in the crack tip was obtained by numerical simulations which calculated the effect of notch radius and penetrated stress. It was found that a 2.5 mm notch radius with the applied stress at 36 KN could generate the largest extent of residual stress ahead of crack tip in the compact specimen. Further, when the specimen was heated to a high temperature, the value of residual stress reduced while the distribution changed little.
引用
收藏
页码：522 / 525
页数：4
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