Softening induced instability of a stretched cohesive granular layer
Classical Physics
2015-05-20 v1 Soft Condensed Matter
Geophysics
Abstract
We report on a cellular pattern which spontaneously forms at the surface of a thin layer of a cohesive granular material submitted to in-plane stretching. We present a simple model in which the mechanism responsible of the instability is the ``strain softening'' exhibited by humid granular materials above a typical strain. Our analysis indicates that such type of instability should be observed in any system presenting a negative stress sensitivity to strain perturbations.
Cite
@article{arxiv.1010.4890,
title = {Softening induced instability of a stretched cohesive granular layer},
author = {Hector Alarcon and Osvanny Ramos and Loïc Vanel and Franck Vittoz and Francisco Melo and Jean-Christophe Géminard},
journal= {arXiv preprint arXiv:1010.4890},
year = {2015}
}