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

Yasuaki Tsurumi, Toshiaki Nakagawa, Nobuyuki Mori, Hiroshi Yamakawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationProceedings of the ASME Design Engineering Technical Conference
    Pages1143-1150
    Number of pages8
    Volume2
    Publication statusPublished - 2001
    Event2001 ASME Design Engineering Technical Conference and Computers and Information in Engineering Conference - Pittsburgh, PA
    Duration: 2001 Sep 92001 Sep 12

    Other

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

    Keywords

    • Finite Element Method
    • Frequency Response Function
    • Optimal Design
    • Reduction Technique
    • Sensitive Analysis

    ASJC Scopus subject areas

    • Engineering(all)

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  • Cite this

    Tsurumi, Y., Nakagawa, T., Mori, N., & Yamakawa, H. (2001). Optimization for vibration reduction in final phase of automotive body structural design. In Proceedings of the ASME Design Engineering Technical Conference (Vol. 2, pp. 1143-1150)