Comparison of the measured and predicted crack propagation behaviour of Zr-2.5Nb pressure tube material

被引：9
|
作者：
Williams, B. W. [1 ]
St Lawrence, S. [1 ]
Leitch, B. W. [1 ]
机构：
[1] Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada
来源：
ENGINEERING FRACTURE MECHANICS | 2011年 / 78卷 / 18期
关键词：
Crack tip opening angle; Crack tunnelling; Crack propagation; Zirconium; FRACTURE-TOUGHNESS; GROWTH; IRRADIATION;
D O I：
10.1016/j.engfracmech.2011.06.020
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The crack propagation behaviour of Zr-2.5Nb pressure tube material was studied through comparison of the measured and predicted behaviour. Three-dimensional finite element simulations of compact tension and burst specimens were performed using the crack tip opening angle (CTOA) as a fracture criterion to allow for crack propagation. To obtain reasonable agreement with the measured force, crack extension, displacement, and crack tunnelling behaviour from compact tension simulations, a non-constant CTOA profile was required. This CTOA profile was then used as the crack propagation criterion in simulations of burst specimens where it was again found that there was reasonable agreement obtained with experiment. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3135 / 3152
页数：18
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