Prediction of strain localization during sheet metal forming using bifurcation analysis and Gurson-type damage
Communication avec acte
Date
2011Résumé
The strain localization phenomenon that may occur during sheet metal forming represents a major cause of defective parts produced in the industry. Several instability criteria have been developed in the literature to predict the occurrence of these instabilities. The proposed work aims to couple a Gurson-type model to the Rice’s localization criterion. The implementation of the modeling is achieved via a user subroutine (Umat) in Abaqus/std using a Runge-Kutta explicit integration scheme. Finally, we show the effectiveness of the proposed coupling for the prediction of the formability of stretched metal sheets.
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- LEM3_COMPASXI_2011_MANSOURI
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- 554.1Ko
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- Conference-Complas-2011-Mansou ...
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Documents liés
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Communication avec acteMANSOURI, Lotfi; CHALAL, Hocine; ABED-MERAIM, Farid ; BALAN, Tudor (Association Française de Mécanique, 2011)Le phénomène de localisation des déformations plastiques, qui apparait lors d’opérations de mise en forme des tôles, représente l’une des principales causes de rebut des pièces produites dans l’industrie. Plusieurs critères ...
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Article dans une revue avec comité de lectureIn this work, we propose to couple the Gurson-Tvergaard-Needleman (GTN) model, known for its widespread use to describe damage evolution in metallic materials, to the Rice localization criterion. ...
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Ductility limit prediction using a GTN damage model coupled with localization bifurcation analysis Article dans une revue avec comité de lectureBecause the localization of deformation into narrow planar bands is often precursor to material failure, several approaches have been proposed to predict this phenomenon. In this paper, the Gurson–Tvergaard– Needleman (GTN) ...
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Communication avec acteSALAHOUELHADJ, Abdellah; CHALAL, Hocine; ABED-MERAIM, Farid ; BALAN, Tudor (Onate, E; Owen, DRJ; Peric, D; Suarez, B, 2011)In this contribution, the formulation of the SHB8PS continuum shell finite element is extended to anisotropic elastic-plastic behavior models with combined isotropic-kinematic hardening at large deformations. The resulting ...
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Article dans une revue avec comité de lectureThis paper proposes an extension of the SHB8PS solid–shell finite element to large strain anisotropic elasto-plasticity, with application to several non-linear benchmark tests including sheet metal forming simulations. ...