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Global optimisation of the production of complex aluminium tubes by the hydroforming process

Bihamta Reza, Bui Q. H., Guillot Michel, D'Amours Guillaume, Rahem Ahmed et Fafard Mario. (2015). Global optimisation of the production of complex aluminium tubes by the hydroforming process. CIRP Journal of Manufacturing Science and Technology, 9, p. 1-11.

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Résumé

With the recent development of analysis software products, designers and engineers are able to design more complex parts to obtain better performance in the final products. In this study, the tube hydroforming process, including preceding processes, i.e. variable thickness tube drawing and two-step bending, are globally optimised to obtain parts without any problems like bursting or un-filled zones at the end of the forming processes. Unlike most previous studies which searched for an optimum hydroforming process by changing two hydroforming parameters, i.e. axial load feeding and internal pressure, in this study, the distribution of initial tube wall thickness and the variation of thickness due to bending steps will be taken into account in a global optimisation algorithm. The developed algorithm is a general-purpose algorithm that can encompass different processes and change various parameters in each process to be able to reach the global objective. The case study used was a part that needs two-step variable thickness tube drawing, and two bending steps before hydroforming. To verify the numerical results in each forming stage and at the end of all forming processes, extensive experiments were performed, and acceptable agreements were observed.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:9
Pages:p. 1-11
Version évaluée par les pairs:Oui
Date:2015
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:AA6061, Aluminium, Tube bending, Tube hydroforming, Variable thickness tube drawing
Déposé le:09 juin 2016 18:17
Dernière modification:09 déc. 2016 14:45
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