Skip to main content

Research Repository

Advanced Search

Sheet metal forming simulation using EAS solid-shell finite elements

Fontes Valente, R. A.; Natal Jorge, R. M.; Alves de Sousa, R. J.; Parente, Marco; Cardoso, Rui P.R.

Authors

R. A. Fontes Valente

R. M. Natal Jorge

R. J. Alves de Sousa

Marco Parente

Rui P.R. Cardoso



Abstract

In this paper, sheet metal forming processes are simulated with a solid-shell finite element entirely based on the enhanced assumed strain (EAS) method. The solid-shell formulation involves a minimum set of enhancing variables, resulting in a competitive approach when compared with other fully integrated hexahedral solid-shell elements in the literature. The adopted EAS methodology is designed for the treatment of both transverse shear and volumetric locking. These numerical pathologies are prone to appear in the simulation of nearly incompressible, thin-shell structures when using displacement-based formulations. Examples consisting in demanding sheet metal forming tests, including large deformation anisotropic and isotropic plasticity with friction, are presented. It is still common to find, in finite element commercial codes, simulation of forming processes being carried out with membrane and shell finite elements following explicit procedures. Nevertheless, and following a distinct approach, the present solid-shell formulation, when implemented within a fully implicit numerical framework, is shown to successfully provide reliable numerical solutions compared to experimental results. © 2006 Elsevier B.V. All rights reserved.

Citation

Alves de Sousa, R. J., Natal Jorge, R. M., Fontes Valente, R. A., Parente, M., & Cardoso, R. P. (2006). Sheet metal forming simulation using EAS solid-shell finite elements. Finite Elements in Analysis and Design, 42(13), 1137-1149. https://doi.org/10.1016/j.finel.2006.04.005

Journal Article Type Article
Publication Date Sep 1, 2006
Journal Finite Elements in Analysis and Design
Print ISSN 0168-874X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 42
Issue 13
Pages 1137-1149
DOI https://doi.org/10.1016/j.finel.2006.04.005
Keywords solid-shell finite element, enhanced assumed strain,
locking, anisotropy, sheet metal forming, implicit simulations
Public URL https://uwe-repository.worktribe.com/output/1037095
Publisher URL http://dx.doi.org/10.1016/j.finel.2006.04.005




Downloadable Citations