Title: Springback analysis of L-sectioned bar of linear work-hardening materials under torsional loading

Authors: Radha Krishna Lal; J.P. Dwivedi; V.P. Singh; Vikas Kumar Choubey; S.K. Srivastava

Addresses: Department of Mechanical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur-273010, India ' Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi-221005, India ' Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi-221005, India ' Institute of Engineering and Rural Technology, Engineering Degree Division, Allahabad, India ' School of Biochemical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi-221005, India

Abstract: This paper deals with the torsional springback problems of L-sectioned bars of linear work-hardening materials. 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. The results are verified experimentally with mild steel bars having a L cross-section and the experimental result have been found to agree well with the theoretical results obtained numerically.

Keywords: torsional springback; work hardening; elastic-plastic boundary; L-sectioned bars; torsional loading; deformation theory; plasticity; finite difference method; FDM; residual stresses; mild steel bars.

DOI: 10.1504/IJETP.2017.080616

International Journal of Energy Technology and Policy, 2017 Vol.13 No.1/2, pp.123 - 140

Received: 28 Feb 2015
Accepted: 28 Jul 2015
Published online: 01 Dec 2016 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article