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Microstructure development beneath the indenter in a granular foundation. In first column: The deformed configuration of the specimen with coarse mesh consisting of 640 elements. In second column: The deformed configuration of the specimen with fine mesh consisting of 2560 elements.

Microstructure development beneath the indenter in a granular foundation. In first column: The deformed configuration of the specimen with coarse mesh consisting of 640 elements. In second column: The deformed configuration of the specimen with fine mesh consisting of 2560 elements.

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Figure 1: (a) Geometry of the two circular rotating cylinders, (b)...
Figure 2: (a) Phase with microstructure in micro-motions and no...
Figure 3: (a) Geometry and boundary conditions of the rectangular...
Figure 4: Rectangular specimen in compression. In first column: The...
+4 Figure 5: Distribution of shear Cosserat rotation 3 ϕ (a) and (b),...
On the observation of extended microstructures and localized deformations in granular materials-A feature of excat quasi-convex energy envelope
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  • Mar 2019
IN THIS PAPER WE PRESENT A MOST PROMISING SCOPE OF THE EXACT QUASICONVEX ENERGY ENVELOPE IN MODELING THE GRANULAR MATERIALS WITH MICROSTRUCTRES. WE SHOW THAT IT IS POSSIBLE TO OBSERVE BOTH THE EXTENDED MICROSTRUCTURES AND LOCALIZED DEFORMATIONS IN GRANULAR MATERIALS USING A VARIATIONAL MODEL BASED ON THE MATHEMATICAL RELAXATION THEORY. THE VARIATIO...
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Context 1
... are the regions where the dissipation in the material takes place upon yielding in plasticity analysis. Results from the numerical simulations in Figure 7 are in accordance to the generalized Prandtl's solution of a rigid flat punch problem, where the dead material (there is no microstructure in this region) underneath the rigid indenter has a triangular shape as seen in the second column of Figure 7(h) and is in agreement with the experimental investigation Walsh and Tordesillas (2006). The red color zones of the material are corresponding to the phase where there is a microstructure due to translational motions of the particles, whereas the purple colored zones are the regimes where there is no internal structure in the material. ...
Context 2
... are the regions where the dissipation in the material takes place upon yielding in plasticity analysis. Results from the numerical simulations in Figure 7 are in accordance to the generalized Prandtl's solution of a rigid flat punch problem, where the dead material (there is no microstructure in this region) underneath the rigid indenter has a triangular shape as seen in the second column of Figure 7(h) and is in agreement with the experimental investigation Walsh and Tordesillas (2006). The red color zones of the material are corresponding to the phase where there is a microstructure due to translational motions of the particles, whereas the purple colored zones are the regimes where there is no internal structure in the material. ...