ABSTRACT
If large enough shear stress is applied on jammed granular material, it fails to sustain the load and starts flowing. One of the most intriguing instabilities in granular media is manifested by departure from fluidlike deformation, distributed throughout the sample, to a localized deformation that occurs along a rather narrow interface between two essentially unstrained parts. This phenomenon, the so-called shear-banding, has been the subject of many experimental and theoretical studies (Mueth et al. 2000; Lesniewska & Mroz 2001; Tejchman & Gudehus 2001; Herrmann 2001; Kolymbas & Herle 2003; Hartley & Behringer 2003; Tejchman 2004) and still continues to raise interesting questions.
