Friction stress effects on mode I crack growth predictions

被引：7

作者：

Chen, Q

Deshpande, VS

Van der Giessen, E

Needleman, A

机构：

[1] Brown Univ, Div Engn, Providence, RI 02912 USA

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[3] Univ Groningen, Dept Appl Phys, NL-9747 AG Groningen, Netherlands

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 06期

基金：

美国国家科学基金会;

关键词：

dislocation; theory; fracture; micromechanical modeling;

D O I：

10.1016/S1359-6462(02)00539-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of a lattice friction stress on the monotonic growth of a plane strain mode I crack under small-scale yielding conditions is analyzed using discrete dislocation plasticity. When the friction stress is increased from zero to half the dislocation nucleation stress, the crack tip stress field changes from one characteristic of a plastic solid to one characteristic of an elastic solid, and the crack growth resistance decreases substantially. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：755 / 759

页数：5

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