Digital Study of the Thermo-Mechanical Behavior of a Dry Granular Media in a Cell of Annular Shear

Soumia TEYAR, Youcef GUETTECHE

Abstract


In the aim to understand the thermo-mechanical phenomenology of the dry granular media due to the grains’ flow nature of (rheology) or particles that constitute this medium. We will illustrate in this present article a numerical study by the discrete elements (MED) method on the thermo-mechanical behavior of a set of rigid particles sheared in an annular cell. This study is focused on the modeling of local friction between particles, from the generation of heat and its diffusion by conduction. We realized out a two-dimensional (2D) numerical model of type Couette geometry to simulate the different thermo-mechanical quantities such as: flow velocity and media temperature. This modeling is implemented within the platform used LMGC90, which is based on the NSCD (Non-Smooth Contact Dynamics Method) approach.

In the First time, we’ll study the various realistic physical quantities of the contact’s rheology (type of particles material, the applied pressure and the shear velocity). Then we will continue by the analytical analysis and interpretation of the obtained results.

DOI: http://dx.doi.org/10.5755/j01.mech.24.6.22461


Keywords


friction, annular shear, dry granular media, generation of heat, conduction heat transfer, NSCD, thermo-mechanical behavior

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Print ISSN: 1392-1207
Online ISSN: 2029-6983