Abstract
We explore a model for compaction of a two-phase medium in which the solid is allowed to deform elasto-viscoplastically. Previous models for compression of colloidal and cellulose fiber suspensions often prescribe the solid stress as a material function of the local solid concentration. Our current model distinguishes between purely elastic or plastic deformation and allows a solid viscous response. This is crucial for model comparison to experiment where a dramatic improvement over inelastic constitutive models is demonstrated.
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