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International Journal of Forming Processes
1292-7775
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 ARTICLE VOL 10/3 - 2007  - pp.277-301  - doi:10.3166/ijfp.10.277-301
TITLE
Prediction of the Localized Necking Phenomena Based on the MMFC and Optimization of Blankholder Forces

ABSTRACT
Numerical simulation of deep drawing and optimization of some process parameters have been the topic of numerous studies by the authors during the last five years. In this work, an optimization procedure based on the response surface method (RSM) and on an adaptation strategy of the research space is proposed and used for the optimization of the blankholder forces design of a square box and a front door panel. In order to solve these forming problems and to predict undesirable defects, the software ABAQUS code was used. The optimization procedure was completely coupled with the finite element analysis to find the optimum forming parameters. The goal is to control the flow of the metal, by adjusting locally the blankholder force profiles during the forming process in order to improve the reliability of the process and the product quality (without wrinkling and fracture of the workpiece). To avoid the failure, a criterion of localised necking is used and tested on some applications. This criterion is based on work of Hora (Hora et al., 1996) and of Brunet (Brunet et al., 2001).


AUTEUR(S)
Lanouar BEN AYED, Arnaud DELAMÉZIÈRE, Jean-Louis BATOZ, Catherine KNOPF-LENOIR

KEYWORDS
Deep Drawing Process, Optimization, Blankholder Force, Necking, Wrinkle.

LANGUE DE L'ARTICLE
Anglais

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