Table of Contents
ISRN Mechanical Engineering
Volume 2013, Article ID 640958, 11 pages
http://dx.doi.org/10.1155/2013/640958
Research Article

Springback Analysis in Sheet Metal Forming Using Modified Ludwik Stress-Strain Relation

Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India

Received 18 June 2013; Accepted 17 July 2013

Academic Editors: C. C. Huang and A. Z. Sahin

Copyright © 2013 Sanjay Kumar Patel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper deals with the springback analysis in sheet metal forming using modified Ludwik stress-strain relation. Using the deformation theory of plasticity, formulation of the problem and spring back ratio is derived using modified Ludwik stress strain relationship with Tresca and von Mises yielding criteraia. The results have been representing the effect of different value of or ratio, different values of Strain hardening index ( ), Poisson’s ratio ( ), and thickness on spring back ratio ( ). The main aim of this paper is to study the effects of the thickness, ratio, and Poisson’s ratio in spring back ratio.