文献类型：期刊文献

英文题名：Simulations of creep crack growth in 316 stainless steel using a novel creep-damage model

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

年份：2013

卷号：98

期号：1

起止页码：169

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20131916314376);WOS:【SCI-EXPANDED(收录号:WOS:000315830800013)】；

基金：This study is funded by National Natural Science Foundation of China (Contract No. 50835003) and China Scholarship Council. Numerical simulations were performed at the Supercomputing Facility at Texas A&M University. Thanks are also given to Prof. Wei Sun at University of Nottingham and Dr. Nak-Hyun Kim at Korea University for the helpful discussion with them.

语种：英文

外文关键词：Creep model; Creep damage; Crack growth; Finite element analysis

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.