文献类型：期刊文献

英文题名：A multiaxial creep-damage model for creep crack growth considering cavity growth and microcrack interaction

作者：Wen, Jian-Feng[1];Tu, Shan-Tung[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

年份：2014

卷号：123

起止页码：197

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20142417814327);WOS:【SCI-EXPANDED(收录号:WOS:000338817500017)】；

基金：This study is funded by National Natural Science Foundation of China (Contract Nos. 11172102 and 50835003). Thanks are also given to Professor Fu-Zhen Xuan at ECUST, Professor Xin-Lin Gao at UT Dallas and Mr. Michael Spindler at EDF Energy for the helpful discussion.

语种：英文

外文关键词：Creep damage; Crack growth; Cavity growth; Multiaxial fracture; Finite element analysis

摘要：This article presents a concise multiaxial creep-damage model for creep crack growth considering the cavity growth and microcrack interaction. Special emphasis is put on developing and validating the multiaxial creep ductility factor (MCDF) based on power-law creep controlled cavity growth theory. Good agreements with the theoretical and experimental data prove the effectiveness of the proposed MCDF. The application of the proposed creep-damage model through finite element simulation of the creep deformation and crack growth in C-Shaped Tension and Compact Tension specimens of 316H tested at 550 degrees C confirms the predictive capability of the proposed model. (C) 2014 Elsevier Ltd. All rights reserved.