Berlin 2005 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 24: Granular Matter
DY 24.10: Vortrag
Samstag, 5. März 2005, 16:30–16:45, TU H2032
Influence of particle elasticity during steady state flow — •Dominik Schwesig1, Dirk Kadau1, Jörg Theuerkauf2, and Dietrich E. Wolf1 — 1Department of Physics, Duisburg-Essen University, D-47048 Duisburg, Germany — 2The Dow Chemical Company, Solids Processing, Freeport TX 77541, USA
Mechanical behavior of granular matter is often charachterized by using shear testers. Here, the steady state flow of non-cohesive powders plays an important role. It can be obtained in an experimental setup using a combination of strain and stress control. We present a simulation of such a biaxial shear tester. We use two complementary discrete element methods: the soft particle molecular dynamics models elastic particles whereas contact dynamics one can simulate perfectly rigid particles. Thus, one gets insight of the influence of particle elasticity on the steady state flow behavior of the powder.