Anisotropic effects in the compression beading of aluminum thin-walled tubes with rubber. (October 2017)

• Record Type: Journal Article
• Authors: Belhassen, L.; Koubaa, S.; Wali, M.; Dammak, F.
• Is Part Of: Thin-walled structures. Volume 119(2017)
• Page Start: 902
• Page End: 910
• Publication Date: 2017-10
• Subjects: Rubber forming -- Compression beading -- Forming Limit Diagram -- Ductile damage -- Anisotropy; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2017.08.010
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: The purpose of this paper is to study numerically the "elastomer-assisted compression beading" (EACB process). It consists of conventional compressing beading after a local bulging carried out by an elastomer material. A Finite Element Method (FEM) is introduced to predict where and when the damage can occur in the tube and to study the effects of anisotropy on the occurrence of failure by cracking in regions where damage is accumulated. An anisotropic elasto-plastic constitutive model with mixed non-linear isotropic/kinematic hardening fully coupled with Lemaitre's ductile damage is implemented in ABAQUS/Explicit software via VUMAT subroutine. The influence of anisotropy on the damage evolution is investigated in this study and results are compared with isotropic model. Highlights: Anisotropic effects in the compression beading of aluminum thin-walled tubes with rubber. A coupled anisotropic plasticity and continuum ductile damage models is investigated. The algorithm can predict ductile damage growth efficiently in sheet metal forming process.