Detailed finite element simulations were carried out to model and optimize the superplastic blow forming process using a microstructure-based constitutive model and a multiscale deformation stability criterion that accounts for both geometrical instabilities and microstructural features. Optimum strain rate forming paths were derived from the multiscale stability analysis and used to develop a variable strain rate forming control scheme. It is shown that the proposed optimization approach captures the characteristics of deformation and failure during superplastic forming and is capable of significantly reducing the forming time without compromising the uniformity of deformation. In addition, the effects of grain evolution and cavitation on the superplastic forming process were investigated, and the results clearly highlight the importance of accounting for these features to prevent premature failure.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Finite element modeling and optimization of superplastic forming using variable strain rate approach


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2004


    Format / Umfang :

    9 Seiten, 17 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    AIAA-2001-1512 Finite Element Modeling of Superplastic Forming of Weldalite^a (049) Alloy

    Ragai, I. / Younan, M. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2001


    The effect of strain rate sensitivity evolution on deformation stability during superplastic forming

    Nazzal, M.A. / Khraisheh, M.K. / Abu-Farha, F.K. | Tema Archiv | 2007


    Finite Element Analysis on Superplastic Blow Forming of Ti-6Al-4V Multi-Sheets

    Yoon, J. H. / Lee, H. S. / Yi, Y. M. et al. | British Library Conference Proceedings | 2007