A 3-D discrete-element method for dry granular flows of ellipsoidal particles
作者： L Vu-Quoc , X Zhang , O.R Walton
DOI: 10.1016/S0045-7825(99)00337-0
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摘要: Abstract We use 3-D discrete element method (DEM) to simulate dry granular flows of non-spherical particles. In our simulation code, particles are represented by clusters spheres for contact detection and contact-force calculation. For in contact, the normal force—displacement (NFD) model is simulated a partially latching spring system; whereas tangential (TFD) an incremental relation that corresponds simplification Mindlin Deresiewicz (R.D. Mindlin, H. Deresiewicz, ASME J. Appl. Mech. 20 (1953) 327–344) contact-mechanics theory. To establish validity procedure, benchmark tests such as superball superbean simulations were carried out. present various results obtained from ellipsoidal flowing down chute having bumpy bottom. These had their physical properties experiments.
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