Simulations of creep crack growth in 316 stainless steel using a novel creep-damage model

被引：91
作者：
Wen, Jian-Feng [1 ,2 ]
Tu, Shan-Tung [1 ]
Gao, Xin-Lin [3 ]
Reddy, J. N. [2 ]
机构：
[1] E China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China
[2] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77483 USA
[3] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA
来源：
ENGINEERING FRACTURE MECHANICS | 2013年 / 98卷
基金：
中国国家自然科学基金;
关键词：
Creep model; Creep damage; Crack growth; Finite element analysis; P91; WELD; PART I; PREDICTION; BEHAVIOR; SPECIMENS; DUCTILITY; FAILURE; PLATES;
D O I：
10.1016/j.engfracmech.2012.12.014
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The paper provides an advanced creep model which gives reasonable descriptions of the effects of damage and stress state from micromechanics viewpoint. A modified creep ductility exhaustion approach is employed to calculate the creep damage. Based on the proposed creep-damage model, numerical analyses of creep crack growth are conducted with a failure simulation technique. The simulated results are compared favorably with available experimental data for compact tension and thumbnail crack specimens for 316 stainless steel tested at 600 degrees C. The comparisons show the excellent capability of the proposed model in predicting the crack growth rate and progressive crack profiles. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：169 / 184
页数：16
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