Optimization for vibration reduction in final phase of automotive body structural design

Yasuaki Tsurumi*, Toshiaki Nakagawa, Nobuyuki Mori, Hiroshi Yamakawa

*この研究の対応する著者

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    In automotive body structural design, Computer Aided Engineering (CAE) has been widely used in order to evaluate noise, vibration, harshness (NVH). A CAE engineer has usually used a large-scale finite element model exceeding 1 million degrees of freedom to improve NVH performance criteria in the final design phase. It is, however, difficult for a CAE engineer to propose the modification candidate for the NVH reduction to an automotive designer in the phase, while good accuracy of the analysis is obtained by using the large-scale model. Only the small modifications can be performed for the NVH performance since configurations of main frame structures are usually determined with respect to crashworthiness in the phase. Therefore, a CAE engineer cannot provide the designer with effective information on time. In this paper, a new optimal design method using a reduction scheme based on the physical coordinates under many design constraints regarding the crashworthiness is proposed in order to overcome above problems. Our proposed method finds out an optimal layout and stiffness value efficiently from the calculation results of the large-scale model. That is, we determine the appropriate location and additional scalar spring constants by minimizing the acceleration of the observation grid. The effectiveness and availability of this method are confirmed using an example.

    本文言語English
    ホスト出版物のタイトルProceedings of the ASME Design Engineering Technical Conference
    ページ1143-1150
    ページ数8
    2
    出版ステータスPublished - 2001
    イベント2001 ASME Design Engineering Technical Conference and Computers and Information in Engineering Conference - Pittsburgh, PA
    継続期間: 2001 9 92001 9 12

    Other

    Other2001 ASME Design Engineering Technical Conference and Computers and Information in Engineering Conference
    CityPittsburgh, PA
    Period01/9/901/9/12

    ASJC Scopus subject areas

    • 工学(全般)

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