Perspectives for the application of variable thickness aluminium tubes in hydroforming of complex tubes

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DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/MSF.690.447
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TypeArticle
Proceedings titleMaterials Science Forum
Conference5th International Conference on Light Metals Technology, 19 July 2011 through 22 July 2011, Luneburg
ISSN0255-5476
ISBN9783037851807
Volume690
Pages447450; # of pages: 4
SubjectAluminium tubes; Axial direction; Complex geometries; Constant thickness; Defective parts; Engine cradle; Thickness distributions; Transportation industry; Tube bending; Tube drawing; Tube hydroforming; Tube hydroforming methods; Tubular products; Variable thickness; Aluminum; Bending (forming); Roofs; Thickness control; Tubes (components)
AbstractTubular products have very important applications in various areas especially in the transportation industries. For instance, in the structure of cars there are various tubular products like roof headers, engine cradles, roof rails and frame rails with complex geometries which most of them need multiple steps like tube drawing, tube bending and hydroforming for their production. Based on the recent studies by this group, it was proven that in most of the structural tubular parts in the cars it was not necessary to have constant thickness along the axial direction of tube and it will be considered as overdesign and the overall weight of structures can be reduced considerably by using variable thickness tubes. In this paper, the variable thickness tube drawing and its applications in the tube bending and hydroforming applications were studied. The results showed that this process can have important role in reduction of defective parts in the production of complex tubes by the tube hydroforming method. However especial considerations should be taken into account in the design of thickness distribution along axial direction of these kinds of tubes to avoid problems in the drawing step and as well in the bending and hydroforming steps. © (2011) Trans Tech Publications.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271739
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Record identifierf05cce21-9a69-4690-bd51-02c60cfb005d
Record created2014-03-24
Record modified2016-05-09
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