Simulation of the behaviour of FCC polycrystals during reversed torsion
Taylor-type polycrystal plasticity models with various single slip hardening laws are evaluated by studying the large strain behaviour of FCC polycrystals during reversed torsion. The material parameters for the various hardening laws are fitted to experimental compression data for copper and then used to predict reversed large strain torsion of tubes. Differences under ``free-end'' (axially unconstrained) or ``fixed-end'' (axially constrained) conditions between predictions and experimental observations are discussed in detail. In addition to the torque response, the Swift effects upon twist reversal are studied.
Taylor-type polycrystal plasticity models
experimental compression data for copper
scientific article; zbMATH DE number 1077132