文献类型：期刊文献

英文题名：Unified characterization of in-plane and out-of-plane creep constraint based on crack-tip equivalent creep strain

作者：Ma, H. S.[1];Wang, G. Z.[1];Xuan, F. Z.[1];Tu, S. T.[1]

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

年份：2015

卷号：142

起止页码：1

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20152300920141);WOS:【SCI-EXPANDED(收录号:WOS:000357482600001)】；

语种：英文

外文关键词：In-plane constraint; Out-of-plane constraint; Equivalent creep strain; Creep crack growth rate; Finite element

摘要：In this work, the unified characterization parameter of in-plane and out-of-plane creep constraint based on crack-tip equivalent creep strain has been investigated. Based on the area surrounded by the crack-tip equivalent creep strain isoline, a unified creep constraint parameter A(c) has been defined. A monotonic correlation line between creep crack growth rate and the parameter A(c) can be formed regardless of in-plane and out-of-plane constraint and choice of the isolines, which indicates that the A(c) is a good unified creep constraint parameter. The parameter A(c) is load independent, and can characterize overall constraint levels for specimens with different in-plane and out-of-plane constraints. (C) 2015 Elsevier Ltd. All rights reserved.