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

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EditorSearch for: Dieringa, Hajo; Search for: Hort, Norbert; Search for: Ulrich Kainer, Karl
Proceedings titleLight Materials Technology V
Series titleMaterial Science Forum; Volume 690
Conference5th International Light Metals Technology Conference 2011 (LMT 2011). Lüneburg, Germany. July 19-22, 2011
SubjectTube drawing; Tube hydroforming; Tube bending; Variable thickness tubes; Aluminium
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.
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedNo
NRC number53439
NPARC number16602872
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Record identifier02df0052-85c1-44f9-a2ac-85425017631a
Record created2011-02-20
Record modified2016-05-09
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