Deformation, stress state and thermodynamic force for a growing void in an elastic-plastic material

被引：32
|
作者：
Fischer, F. D. [1 ]
Antretter, T. [1 ]
机构：
[1] Univ Leoben, Inst Mech, A-8700 Leoben, Austria
来源：
INTERNATIONAL JOURNAL OF PLASTICITY | 2009年 / 25卷 / 10期
关键词：
Voids and inclusions; Elastic-plastic material; Nano-void plasticity; Analytic functions; SPHERICAL CAVITY EXPANSION; SINGLE-CRYSTAL; DISLOCATION EMISSION; COMPRESSIBLE MISES; DUCTILE FRACTURE; GROWTH; ENERGY;
D O I：
10.1016/j.ijplas.2008.11.007
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The growth of a spherical void in an elastic-plastic body, subjected to external pressure or tension and a gas pressure as well as a surface stress at the void surface, is investigated. The deformation, strain and stress state in the full body is presented. In addition, the local and global energy terms are calculated. Finally the total thermodynamic force on the void surface as well as the total dissipation are evaluated and compared allowing the calculation of the mechanical contribution to void growth due to diffusion of vacancies generated by plastification or irradiation. (C) 2009 Published by Elsevier Ltd.
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页码：1819 / 1832
页数：14
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