J-A elastic-plastic crack tip field and the two-parameter fracture criterion

被引：4
作者：
Matvienko, Yu. G. [1 ]
Nikishkov, G. P. [1 ]
机构：
[1] Russian Acad Sci, Mech Engn Res Inst, 4 M Kharitonievsky Per, Moscow 101990, Russia
来源：
21ST EUROPEAN CONFERENCE ON FRACTURE, (ECF21) | 2016年 / 2卷
基金：
俄罗斯科学基金会;
关键词：
Three-term elastic-plastic asymptotic expansion; constraint parameter; J-A fracture criterion; finite element method; CONSTRAINT PARAMETER; TOUGHNESS; STRESS;
D O I：
10.1016/j.prostr.2016.06.004
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The paper deals with a review of theoretical and numerical aspects of the two-parameter J-A approach in elastic-plastic fracture mechanics. This approach is based on the three-term asymptotic expansion for the stress field near the tip of mode I crack in an elastic-plastic solid. The parameter A is introduced in fracture criterion as a constraint parameter. The unified J(C)-A master curve is constructed for different geometry and thickness of specimens. Constraint parameter A and J value for various configurations of specimens and the hardening exponent is computed by means of three-dimensional elastic-plastic stress analyses employing finite element method. Copyright (C) 2016 The Authors. Published by Elsevier B.V.
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页码：26 / 33
页数：8
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