Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modelling Particle Breakage in Unsaturated Granular Assemblies
In this paper we use a thermomechanical approach to study inelastic processes in unsaturated granular matter. The paper extends the breakage mechanics theory to unsaturated conditions, investigates the physical roots of hydro-mechanical coupling and elucidates the interplay between yielding locus and degree of saturation. For this purpose, energy storage mechanisms are hypothesized to consist of the sum of an elastic energy potential and a hydraulic contribution inspired by the capillary theory. Microscopic arguments are then used to define suitable grainsize scaling laws. These assumptions are finally combined with a statistical homogenization procedure, thus deriving a macroscopic Helmholtz free energy. The paper shows that such procedure, together with the breakage dissipation, is able to capture salient couplings between mechanics and hydraulics. The results provide a novel theoretical explanation for the approaches commonly used in plasticity models for unsaturated porous media.
Modelling Particle Breakage in Unsaturated Granular Assemblies
In this paper we use a thermomechanical approach to study inelastic processes in unsaturated granular matter. The paper extends the breakage mechanics theory to unsaturated conditions, investigates the physical roots of hydro-mechanical coupling and elucidates the interplay between yielding locus and degree of saturation. For this purpose, energy storage mechanisms are hypothesized to consist of the sum of an elastic energy potential and a hydraulic contribution inspired by the capillary theory. Microscopic arguments are then used to define suitable grainsize scaling laws. These assumptions are finally combined with a statistical homogenization procedure, thus deriving a macroscopic Helmholtz free energy. The paper shows that such procedure, together with the breakage dissipation, is able to capture salient couplings between mechanics and hydraulics. The results provide a novel theoretical explanation for the approaches commonly used in plasticity models for unsaturated porous media.
Modelling Particle Breakage in Unsaturated Granular Assemblies
Buscarnera, G. (Autor:in) / Einav, I. (Autor:in)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1400-1409
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Numerical Simulation of Particle Breakage of Granular Assemblies in Discrete Element Analyses
| DOAJ | 2019
Prediction of breakage-induced couplings in unsaturated granular soils
| Online Contents | 2015
Breakage mechanics-Part II: Modelling granular materials
| British Library Online Contents | 2007
Particle breakage of granular soils: changing critical state line and constitutive modelling
| Springer Verlag | 2022