Springback analysis of Triangular Cross-sectioned Bar of Linear Work- Hardening Materials under Torsional Loading

Abstract

This paper deals with the torsional springback problems of Triangular cross-sectioned bars of linear work-hardening materials, the properties of which can be modelled by a deformation theory constitutive equation of the Ramberg-Osgood type. Using the deformation theory of plasticity, a numerical scheme based on the finite difference approximation has been proposed. The growth of the elastic-plastic boundary and the resulting stresses while loading, and the torsional springback and the residual stresses after unloading are calculated.