Finite Element Analysis of Thermodynamically Consistent Strain Gradient Plasticity Theory and Applications

2019 ◽  
pp. 781-838
Author(s):  
George Z. Voyiadjis ◽  
Yooseob Song
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Gradient ◽  
Plasticity Theory ◽  
Strain Gradient Plasticity ◽  
Gradient Plasticity ◽  
Element Analysis ◽  
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.

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