文献类型：期刊文献

英文题名：Unified correlation of in-plane and out-of-plane constraints with cleavage fracture toughness

作者：Mu, M. Y.[1];Wang, G. Z.[1];Xuan, F. Z.[1];Tu, S. T.[1]

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

年份：2015

卷号：80

起止页码：121

外文期刊名：THEORETICAL AND APPLIED FRACTURE MECHANICS

收录：;EI(收录号：20154701565015);WOS:【SCI-EXPANDED(收录号:WOS:000366340200001)】；

基金：This work is supported by the Projects of the National Natural Science Foundation of China (Grant Nos: 51575184, 51375165, and 51325504).

语种：英文

外文关键词：In-plane constraint; Out-of-plane constraint; Cleavage fracture toughness; Unified correlation; Equivalent plastic strain

摘要：Extensive three-dimensional finite element analyses have been conducted for a large amount of experimental specimens with a wide range of in-plane and out-of-plane constraints. The capability of the new constraint parameter A(p) for establishing a unified correlation of in-plane and out-of-plane constraints with cleavage fracture toughness of a reactor vessel steel were comparatively investigated with the conventional constraint parameters Q and T-stress. The results show that the parameter Ap can characterize both in-plane and out-of-plane constraints and their interaction. Based on the parameter Ap, the unified correlation of a wide range of in-plane and out-of-plane constraints with cleavage fracture toughness of the steel has been obtained. In structural integrity analyses based on fracture mechanics incorporating constraint effects for improving accuracy, the unified correlation may be used to determine constraint-dependent or structurally relevant fracture toughness of specimens or cracked components with a wide range of in-plane and out-of-plane constraint levels. (C) 2015 Elsevier Ltd. All rights reserved.