2006/03/21 by F Alonso-Marroquin, Fernando Alonso-Marroquín, I. Vardoulakis +6 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Geological and Geochemical Analysis #High-pressure geophysics and materials #cond-mat.mtrl-sci #earthquake and tectonic studies
paper · pdf · doi:10.1103/physreve.74.031306
published as Phys. Rev. E 74, 031306 (2006) · Submitted to Phys. Rev. E
arxiv created 2006/03/21 · openalex publication_date 2006/09/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Sliding and rolling are two outstanding deformation modes in granular media. The first one induces frictional dissipation whereas the latter one involves deformation with negligible resistance. Using numerical simulations on two-dimensional shear cells, we investigate the effect of the grain rotation on the energy dissipation and the strength of granular materials under quasistatic shear deformation. Rolling and sliding are quantified in terms of the so-called Cosserat rotations. The observed spontaneous formation of vorticity cells and clusters of rotating bearings may provide an explanation for the long standing heat flow paradox of earthquake dynamics.