Numerical and experimental study of the plastic zone in cracked specimens

被引：34
作者：
Camas, D. [1 ]
Lopez-Crespo, P. [1 ]
Gonzalez-Herrera, A. [1 ]
Moreno, B. [1 ]
机构：
[1] Univ Malaga, Dept Civil & Mat Engn, C Dr Ortiz Ramos S-N, E-29071 Malaga, Spain
来源：
ENGINEERING FRACTURE MECHANICS | 2017年 / 185卷
关键词：
Finite element analysis; Digital image correlation; Crack tip plastic zone; Crack growth; Fracture mechanics; DIGITAL IMAGE CORRELATION; STRESS INTENSITY; TIP FIELDS; T-STRESS; FATIGUE; CLOSURE; GROWTH; FRONT; SIMULATION; THICKNESS;
D O I：
10.1016/j.engfracmech.2017.02.016
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The crack propagation is influenced by what happens at both the surface and the interior of the component. Traditional experimental tools allow the surface behaviour to be characterised accurately but the information obtained from the bulk is much more limited. In this work, a study of both bulk and surface behaviour is presented. The material behaviour is studied by powerful 3D ultrafine finite element analysis in terms of the crack tip plasticity for a range of different conditions. The analysis is performed on a wedged opening loaded specimen made of an Aluminium alloy. The results are then validated with full-field digital image correlation data. The validation is used to enhance the model used in our analyses. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：20 / 32
页数：13
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