Analysis of the strain softening size effect for rock specimens based on shear strain gradient plasticity theory

2002 ◽  
Vol 39 (6) ◽  
pp. 801-805 ◽  
Author(s):  
Yishan Pan ◽  
Xuebin Wang ◽  
Zhonghva Li
Keyword(s):  
Size Effect ◽  
Shear Strain ◽  
Strain Gradient ◽  
Strain Softening ◽  
Plasticity Theory ◽  
Strain Gradient Plasticity ◽  
Gradient Plasticity ◽  
Rock Specimens ◽  
Strain Gradient Plasticity Theory

Strain Gradient Plasticity Theory Based on Dislocation - Controlling Mechanism for Nanocrystalline Materials

2010 ◽  
Vol 97-101 ◽  
pp. 2155-2158
Author(s):  
Jian Qiu Zhou ◽  
Lu Ma ◽  
Rong Tao Zhu
Keyword(s):  
Strain Gradient ◽  
Plasticity Theory ◽  
Strain Gradient Plasticity ◽  
Gradient Plasticity ◽  
Two Phase ◽  
Grain Sizes ◽  
Controlling Mechanism ◽  
Model Predictions ◽  
Theory Comparison ◽  
Strain Gradient Plasticity Theory

Due to their dissimilar properties and different deformation mechanisms between grain interior (GI) and grain boundary affected zone (GBAZ) in the nanocrystalline (NC) materials, a two-phase composite model consisting of GI and GBAZ was developed and adopted to build strain gradient plasticity theory. Comparison between experimental data and model predictions at different grain sizes for NC copper shows that the developed method appears to be capable of describing the strain hardening of NC materials.

scholarly journals Interfaces within strain gradient plasticity: Theory and experiments

2006 ◽  
Vol 54 (19) ◽  
pp. 5077-5085 ◽  
Author(s):  
K.E. Aifantis ◽  
W.A. Soer ◽  
J.Th.M. De Hosson ◽  
J.R. Willis
Keyword(s):  
Strain Gradient ◽  
Plasticity Theory ◽  
Strain Gradient Plasticity ◽  
Gradient Plasticity ◽  
Theory And Experiments ◽  
Strain Gradient Plasticity Theory
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