Within the framework of an European project concerning hydrogen storage, one analyze the way to manufacture high pressure tanks (700bars) for hydrogen storage, intended to be embarked for using in motor vehicles. These tanks consist of a metallic liner, which ensure a barrier role compared to the hydrogen atoms as well as a part of the mechanical resistance, and of a composite envelope built by filament rolling up which ensures the complementary part of the mechanical resistance. The paper describes the work completed within this framework, on the basis of the simulation of the hydroforming process thanks to the complete control of the process, in volume of fluid injected. One was thus brought to develop an optimization module based on finite element calculations. This optimization module includes MPI library in order to launch several calculations in parallel on a Linux cluster. It consists in seeking the optimal evolution of the fluid volume injected vs. time to obtain a good quality component. In our case, the optimization criterion is based on the variation thickness of the tube and the possible appearance of necking. It is shown that such a way for controlling the process provide the way to get minimal thickness variation, comparatively to standard optimization approaches where the process parameters are discretized through processing time in a more standard way.


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    Title :

    Design of hydroforming processes for metallic liners used in high pressure hydrogen storage


    Additional title:

    Entwurf von Hydroumformverfahren für metallische Ausmauerungen von Hochdruck-Wasserstofftanks


    Contributors:
    Gelin, J.C. (author) / Labergere, C. (author) / Thibaud, S. (author) / Boudeau, N. (author)


    Publication date :

    2005


    Size :

    5 Seiten, 9 Bilder, 1 Tabelle, 5 Quellen





    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English