Evolution of force chains in shear bands in sands

摘要: Precise knowledge of the post-peak constitutive response occurring within shear bands in sands is keen interest geomechanics, particularly for accurate modelling progressive failure phenomena. There mounting evidence that displacement field non-uniform and distinguished by distinct meso-scale features: namely, particle force chains. Experimental validation such features will help elucidate precise nature deformation bands. This paper presents experimental kinematic signatures chain activity sands. The kinematics are quantified from digital-image-correlation-based, grain-scale analyses performed on digital images specimens undergoing plane strain compression. As previous work, data reveal distinct, systematic patterns along length band, which serve as indirect build-up collapse. Herein,...