Representation of crack-tip plasticity in pressure sensitive geomaterials

被引：0
|
作者：
Panos Papanastasiou
Colin Atkinson
机构：
[1] Schlumberger Cambridge Research,Department of Mathematics
[2] Imperial College of Science,undefined
来源：
International Journal of Fracture | 2000年 / 102卷
关键词：
Dislocation model; superdislocation; crack-tip plasticity; pressure sensitive material.;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper presents a model based on dislocation theory for representation of crack tip plasticity in a pressure sensitive material. The basic equations are derived from a simple model of the crack tip plasticity which represents the plasticity by superdislocations placed at the effective centres of the complete slip process distributed around the crack tip. The positions and strengths of the superdislocations are determined by imposing the following conditions:
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页码：271 / 286
页数：15
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