Competitive pressure, in-house standards, regulatory and public domain requirements are driving the development of new vehicle structures. These (typically conflicting) requirements, as well as the trend toward reduced development times and less prototype testing, present huge challenges to vehicle engineering, which can only be addressed by intensified usage of numerical tools. Of paramount importance in this context is the proper deployment of optimisation techniques, involving parameter, shape or topology optimisation. Especially, multi-disciplinary optimisation in conjunction with arbitrary geometry updates is anticipated to gain even more attention in the near future. In this paper a fully automated method of structural optimisation for body in white structures is presented. The iterations in the optimisation loop involve fully parameterised design generation, automated meshing and model assembly, parallel computation, evaluation of output, and generation of new design proposals based on genetic algorithms. For this purpose both internally developed software codes (in Matlab and Perl) and commercially available application software codes (SFE Concept, Hypermesh, and Radioss) are invoked. The viability of the method has been demonstrated for shape optimisation of a front bumper system utilizing both material and geometry related properties as design variables. In addition, weight optimisation of a large-scale vehicle half model is addressed with special emphasis on the application of statistical data analysis based on principal components.


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    Titel :

    Structural optimisation focussing on vehicle safety performance


    Weitere Titelangaben:

    Strukturoptimierung in Hinsicht auf die Fahrzeugsicherheitsleistung


    Beteiligte:
    Hilmann, J. (Autor:in) / Paas, M. (Autor:in)


    Erscheinungsdatum :

    2006


    Format / Umfang :

    18 Seiten, 14 Bilder, 7 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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