Body shells of cars, busses, airplanes are permanently exposed to external mechanical loads or impacts by flint or hail. These exposures mostly result in local plastic damages on body shell panels. As determined in numerous research series, the denting resistance can be enhanced by higher plastic strains in sheet metal parts. Stretching of specimens prior to the deep drawing process increases the plastic strain in relatively flat metal sheet body shells. New requirements for stretch forming methods, defined by experimental data and present knowledge led to developing a new stretch forming technology. The basic function principle includes multiple bead geometries, which induce tensile forces by forming a flat sheet metal blank. The application of this stretch forming principle allows a renouncement on complex hydraulic and control systems and furthermore the realization of cost optimized stretch forming tools. Especially the simple geometry design and tool setup allows low investment costs and short process cycle times. Within fundamental research series, the new technology was examined and new estimation methods based on experimental data and FEM-Simulations were defined at the Institute for Metal Forming Technology at Stuttgart University.


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    Titel :

    Improvement of car body outer skin properties using new sheet metal forming technologies


    Weitere Titelangaben:

    Neue Technologien für die Optimierung der Bauteileigenschaften von Karosserieaußenhautteilen


    Beteiligte:


    Erscheinungsdatum :

    2007


    Format / Umfang :

    14 Seiten, 16 Bilder, 10 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Improvement of car body outer skin properties using a new sheel metal forming technologies

    Vlahovic,D. / Liewald,M. / Univ.Stuttgart,Inst.f.Umformtechnik,DE | Kraftfahrwesen | 2007


    Development of new stretch-forming technologies for car body outer skin panels

    Vlahovic, Dejan / Liewald, Mathias | Tema Archiv | 2008


    Development of new stretch-forming technologies for car body outer skin panels

    Vlahovic,D. / Liewald,M. / Univ.Stuttgart,DE | Kraftfahrwesen | 2008


    New technologies of sheet metal press forming

    Matsui, M. | Tema Archiv | 1996


    Rapid Prototyping Technologies for Advanced Sheet Metal Forming

    Berger, U. / Kanckfuss, P. / Heath, A. et al. | British Library Conference Proceedings | 1994