Effects of triaxial confining pressure and strain rate on stick-slip behavior of a dry granular material

Some granular materials including spherical glass beads may suffer from stick-slip instabilities which are characterized by successive fluctuations in the stress–strain behavior. Under various loading conditions, these stick-slip failures cause a portion of the stored strain energy within the granular medium to be suddenly released. It is accompanied by a partial collapse and volumetric contraction occurring at the same time. In order to...