TY - GEN
T1 - Shear band formation as a variational problem
AU - Unger, T.
AU - Wolf, D. E.
AU - Török, J.
AU - Kertész, J.
PY - 2005
Y1 - 2005
N2 - We give a theoretical analysis of recent experiments on localized shear flow, where in a modified Couette cell shear bands were created in the bulk away from the confining walls. We discuss how the shape of the shear bands is related to the cell geometry. First a geometric argument is presented for narrow shear bands which connects the function of their surface position with the shape in the bulk. Assuming a simple dissipation mechanism we show that the principle of minimum dissipation of energy provides a good description of the shape function. Furthermore, we discuss the behavior of shear bands which are detached from the free surface and are entirely covered in the bulk.
AB - We give a theoretical analysis of recent experiments on localized shear flow, where in a modified Couette cell shear bands were created in the bulk away from the confining walls. We discuss how the shape of the shear bands is related to the cell geometry. First a geometric argument is presented for narrow shear bands which connects the function of their surface position with the shape in the bulk. Assuming a simple dissipation mechanism we show that the principle of minimum dissipation of energy provides a good description of the shape function. Furthermore, we discuss the behavior of shear bands which are detached from the free surface and are entirely covered in the bulk.
UR - http://www.scopus.com/inward/record.url?scp=84857555876&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84857555876
SN - 0415383471
SN - 9780415383479
T3 - Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
SP - 227
EP - 231
BT - Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
T2 - 5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005
Y2 - 18 July 2005 through 22 July 2005
ER -