In topology optimization, sufficient resolution and a constraint volume of less than 1% are required to obtain a practical vehicle body structure without solid circular-section frames. To meet the requirement for sufficient resolution, the authors are developing voxel topology optimization software, including a finite element solver that utilizes the building cube method framework available in massively parallel environments. The authors have performed a topology optimization of billions of elements intended for a vehicle frame using 35,000–66,000 processors and measured its parallel performance. In addition, four different methods to treat multiple-load cases required for vehicle performance into single objective functions are examined. As a result, normalizing compliance with the appropriate target energy obtained by the original body-in-white frame balances the optimization performance across cases. In the single-load case, thick solid beams are generated through optimization. In contrast, such solid frames are suppressed in multiple-load cases, resulting in a structure similar to a practical body-in-white frame.


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    Titel :

    Billion-design-variable-scale topology optimization of vehicle frame structure in multiple-load case


    Beteiligte:
    Wada, Yuji (Autor:in) / Shimada, Tokimasa (Autor:in) / Nishiguchi, Koji (Autor:in) / Okazawa, Shigenobu (Autor:in) / Tsubokura, Makoto (Autor:in)


    Erscheinungsdatum :

    01.10.2024




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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