This paper on "The Rolling and Extrusion of Multi-Phase Media" was presented at the NAFEMS World Congress on Design, Simulation & Optimisation: Reliability & Applicability of Computational Methods - 9-11 April 1997, Stuttgart, Germany.

Summary

This paper describes a general framework for the finite element simulation of the rolling and extrusion of multi-phase materials. Emphasis is given to the following aspects: The characterization of the coupling between the liquid and solid phases of the material; The modelling of the (highly non-linear) behaviour of the solid skeleton; The adaptive mesh refinement strategy, required in view of the magnitude of the strains involved in the processes; The use of an efficient contact algorithm, and; The inverse identification of material parameters for the solid phase by means of "numerical experiments”. Practical application of the developed framework is made to the numerical simulation of the process by which juice is extracted from prepared sugar cane by rolling.