Title: A membrane finite element program for modelling the sheet metal stamping process

Authors: C. Gontier

Addresses: Ecole Centrale des Arts et Manufactures, Laboratoire de Mechanique des Sols et Structures, France

Abstract: This paper deals with the problem of the numerical simulation of the sheet metal stamping operation by a finite element method. A first program based on a simplified hypothesis has been developed. This program is based on a triangular finite element for the shell. We discuss the advantages and specific difficulties caused by this choice. Three aspects of non-linear behaviour arc considered. Large displacements are taken into account through a Newtonian method: variable contact conditions and elastic-plastic behaviour are introduced through a |tangent matrix| formulation. A strategy for computation with the three above-mentioned non-linearities is suggested.

Keywords: complete shell formulation; compressional stress; Eulerian formulation; Lagrangian formulation; finite element method; FEM; modelling; membrane formulation; nonlinear behaviour; stiffness matrix; numerical simulation; sheet metal stamping.

DOI: 10.1504/IJVD.1991.061754

International Journal of Vehicle Design, 1991 Vol.12 No.3, pp.304 - 314

Published online: 27 May 2014 *

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