Representation of Crack-Tip Plasticity in Pressure Sensitive Geomaterials: Large Scale Yielding

被引：0

作者：

Panos Papanastasiou

Colin Atkinson

机构：

[1] University of Cyprus,Department of Civil and Environmental Engineering

[2] Imperial College of Science,Department of Mathematics

来源：

International Journal of Fracture | 2006年 / 139卷

关键词：

Dislocation; crack-tip plasticity; Mohr-Coulomb; large scale yielding;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We model large scale Mohr-Coulomb yielding that accompany fractures in weak rocks, by means of dislocations. 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 crack tip process zone.

引用

页码：137 / 144

页数：7

共 7 条

[1]

Atkinson C.(1977)A simple representation of crack tip plasticity: The inclined strip-yield superdislocation model International Journal of Fracture 13 151-163

[2]

Kanninen M.F.(1971)A simple model of relaxation at a crack tip Acta Mettalurgica 19 679-683

[3]

Atkinson C.(1999)The effective fracture toughness in hydraulic fracturing International Journal of Fracture 96 127-147

[4]

Kay T.R.(2000)Representation of crack-tip plasticity in pressure sensitive geomaterials International Journal of Fracture 102 271-286

[5]

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[6]

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[7]

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