Abstract
Abstract Torsion-tension behaviors of aluminium tubes are simulated numerically using the finite-element polycrystal model. As a multiple-slip work-hardening model in crystals, the backlash model and the maximum forest dislocation model are proposed to account for Bauschinger effect in reverse loading and cross effect (latent hardening) in non-proportional loading, respectively. The simulations with the new microscopic constitutive law predict well Bauschinger curves, cyclic loading curves and cross loading curves.
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