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https://libjncir.jncasr.ac.in/xmlui/handle/10572/2442| Title: | Variable-cell method for stress-controlled jamming of athermal, frictionless grains |
| Authors: | Smith, Kyle C. Srivastava, Ishan Fisher, Timothy S. Alam, Meheboob |
| Keywords: | Fluids & Plasmas Physics Mathematical Physics Molecular-Dynamics Zero-Temperature Crystalline Packings Transitions Disorder Behavior System Order Shape |
| Issue Date: | 2014 |
| Publisher: | English |
| Citation: | Smith, KC; Srivastava, I; Fisher, TS; Alam, M, Variable-cell method for stress-controlled jamming of athermal, frictionless grains. Physical Review E 2014, 89 (4), 42203 http://dx.doi.org/10.1103/PhysRevE.89.042203 Physical Review E 89 |
| Abstract: | @American Physical Society, 2014 |
| Description: | http://dx.doi.org/10.1103/PhysRevE.89.042203 |
| URI: | https://libjncir.jncasr.ac.in/xmlui/10572/2442 |
| ISSN: | A method is introduced to simulate jamming of polyhedral grains under controlled stress that incorporates global degrees of freedom through the metric tensor of a periodic cell containing grains. Jamming under hydrostatic (isotropic) stress and athermal conditions leads to a precise definition of the ideal jamming point at zero shear stress. The structures of tetrahedra jammed hydrostatically exhibit less translational order and lower jamming-point density than previously described maximally random jammed hard tetrahedra. Under the same conditions, cubes jam with negligible nematic order. Grains with octahedral symmetry having s > 0.5 (where s interpolates from octahedra [s = 0] to cubes [s = 1]) jam with an abundance of face-face contacts in the absence of nematic order. For sufficiently large face-face contact number, percolating clusters form that span the entire simulation box. The response of hydrostatically jammed tetrahedra and cubes to shear-stress perturbation is also demonstrated with the variable-cell method. |
| Appears in Collections: | Research Articles (Meheboob Alam) |
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|---|---|---|---|---|
| 292.pdf Restricted Access | 2.06 MB | Adobe PDF | View/Open Request a copy |
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