Influence of liquid bridges on the mechanical behaviour of polydisperse granular materials |
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| Authors: | F Souli F Cherblanc MS El Youssoufi C Saix |
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| Institution: | F. Soulié,F. Cherblanc,M.S. El Youssoufi,C. Saix |
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| Abstract: | We investigate a polydisperse granular material in which the particle interactions are governed by a capillary force law. The cohesion force for a grain‐pair with unequal diameters is expressed as an explicit function of the inter‐particle distance and the volume of the liquid bridge. This analytical relation is validated by experiments on a reference material. Then, it is completed by a rupture criterion and cast in the form of a force law that accounts for solid contact, capillary force and rupture characteristics of a grain‐pair. Finally, in order to evaluate the influence of capillary cohesion on the macroscopic behaviour, radial and axial compression tests on cylindrical assemblies of wet particles are simulated using a 3D distinct element method. Copyright © 2005 John Wiley & Sons, Ltd. |
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| Keywords: | liquid bridge polydisperse cohesion capillary force humid granular media DEM simulation |
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