Shear band formation as a variational problem

T. Unger, D. E. Wolf, J. Török, J. Kertész

Research output: Contribution to Book/Report typesConference contributionpeer-review

Abstract (may include machine translation)

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.

Original languageEnglish
Title of host publicationPowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Pages227-231
Number of pages5
StatePublished - 2005
Externally publishedYes
Event5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005 - Stuttgart, Germany
Duration: 18 Jul 200522 Jul 2005

Publication series

NamePowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Volume1

Conference

Conference5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005
Country/TerritoryGermany
CityStuttgart
Period18/07/0522/07/05

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