USE OF CRYSTAL PLASTICITY IN METAL-FORMING SIMULATIONS

Some recent work on the implementation of crystal plasticity constitutive relations in the simulation of metal deformation processes is discussed. The rate-dependent crystal plasticity theory employed is first briefly presented. We then consider some special cases of fcc metals with certain ''ideal textures'', for which closed-form analytical solutions are given for rolling and biaxial sheet stretching modes. Finally, the incorporation of the crystal plasticity constitutive relations into the finite element analysis of large-strain boundary-value problems is illustrated..The example treated is the behaviour of axially constrained and freely elongating solid circular bars subject to finite strain torsion.