Finite element and experimental solutions for the upsetting of pastes

Describes an elastic visco-plastic finite element formulation that is applied to the modelling of pastes. Comparisons ave made with experimental results obtained for a particular paste, plasticine. Special attention is applied to the frictional boundary conditions, for which the usual Coulombic procedure is augmented by a "cohesive" wall friction component. Viscous effects also ave considered.