Formability of tube hydroforming under various loading paths

Hama, Takayuki; Ohkubo, Tadashi; Kurisu, Kazuhiko; Fujimoto, Hitoshi; Takuda, Hirohiko

doi:10.1016/j.jmatprotec.2006.03.213

Cited by 37 publications

(22 citation statements)

References 6 publications

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“…As a comparatively new process, the core of tube hydroforming process is using the hardness and stiffness of blank fully, replacing the clavate blank with tubular blank and forming tubular components by internal hydraulic pressure [2]. The fundamental principles of tube hydroforming processes can be described as Fig .2.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Hydroforming Square Hollow Component

Li¹,

Li²

2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Abstract-Tube hydroforming is attracting more and more attention in many industrial fields, especially in automotive industries and aircraft industry. In this paper, aiming at the problem of the match of axial force and internal pressure, the results of experimental research on the influence of loading path on hydroforming square hollow component was presented. The detail experimental procedure and material property was introduced firstly and the effect of loading path on the thickness distribution of the component was discussed in detail. Finally, the difference of four loading path was presented and analyzed with experimental results. It is demonstrated that the forming of blank is under the effect of tension stress and compression stress, the tension stress come from the force of punch and the compression stress come from the internal pressure, the loading path plays an important role in tube hydorforming process which was the key technology of hydroforming and it is benefit to optimize the load path with hydroforming different hollow component.

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Section: Introductionmentioning

confidence: 99%

Experimental Research of Hydroforming Square Hollow Component

Li¹,

Li²

2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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“…For this reason, more recently, finite element analysis (FEA) is more widely used as a powerful tool for analyzing the effects of different process parameters on THF of complex geometries (Gholipour et al, 2004). Hama et al (2006) developed a finite element model (FEM) to simulate the effects of three different load paths, namely pressure advanced, linear, and feed advanced, for THF of a part with a rectangular cross section. The results showed that the pressure-advanced load path, in which the internal pressure increases to a threshold value prior to starting the axial end feeding, leads to a higher formability as the initial internal pressure prevents local wrinkling in the early stages of the process.…”

Section: Introductionmentioning

confidence: 99%

Load path optimization in tube hydroforming

Mojarad¹,

Champliaud²,

Gholipour³

et al. 2015

Can. Aeronaut. Space J.

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Load path optimization in tube hydroformingMojarad, S.; Champliaud, H.; Gholipour, J.; Savoie, J.; Wanjara, P.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21276028&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21276028&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.5589/q15-003Canadian Aeronautics and Space Journal, 60, 3, pp. 82-89, 2015-03-02 Load path optimization in tube hydroforming S. Mojarad, H. Champliaud, J. Gholipour, J. Savoie, and P. WanjaraAbstract. The goal of this work was to identify the optimum combination of the main process parameters, i.e., the internal pressure and end feeding (load path), for tube hydroforming to minimize the thickness reduction, while satisfying the failure constraint defined by the forming limit diagram of the material. To perform process design optimization with minimum experimentation, the LS-OPT software was utilized in combination with a finite element model (FEM) that simulated a round to square tube hydroforming (THF) process for stainless steel 321 in LS-DYNA. The load path obtained through the optimization procedure was applied to the THF process and the tube expansion and the thickness results obtained from the FEM were compared with the experimental results in the critical regions of the hydroformed tube.Résumé. L'objectif de cette étude était de déterminer la combinaison optimale des principaux paramètres du procédé, c'est-à-dire la pression interne et la compression axi...

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“…Particularly, tube hydroforming with various cross sectional shapes along the tube axis is a well-known and wide used technology for mass production, due to the improvement in computer controls and high pressure hydraulic systems (Asnafi et al, 2000;Hama et al, 2006;Cherouat et al, 2002). Many experimental studies of asymmetric hydroforming tube have been examined (Donald et al, 2000;Sokolowski et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been devoted to the mechanical and numerical modelling of the hydroforming processes using the finite element analysis (Hama et al, 2006;Donald et al, 2000), allowing the prediction of the material flow and the contact boundary evolution during the process. However, the main difficulty in many hydroforming processes is to find the convenient control of the evolution of the applied internal pressure and axial forces paths.…”

Section: Introductionmentioning

confidence: 99%