A study on energy absorbing members for improvement of train crashworthiness

Hiroshi Yamakawa, Tokuichiro Oku, Kouji Funatsu, Yasushi Ujita

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

    3 Citations (Scopus)

    Abstract

    A series of past works on structural optimizations of train car bodies were done by the authors to improve crashworthiness. There a concept of crushable body similar to that of automobiles was introduced and a simple model with lumped masses and nonlinear springs was adopted to know the macroscopic dynamic behaviors in car collisions. Then the parameters of nonlinear springs in crushable zones to specify the load-deformation curve were determined optimally to improve crashworthiness. It was also found it difficult to realize such optimum properties by making use of ordinary structural members only and additional use of energy absorbing structural members might be inevitable. Thus specified members with various holes are considered in this study to absorb collision energy. The positions and geometric dimensions of the holes are optimally determined to meet the optimum properties of nonlinear springs. The results confirm the effectiveness and applicability of those types of specified members to real train car bodies,

    Original languageEnglish
    Title of host publicationCollection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
    Pages650-655
    Number of pages6
    Volume1
    Publication statusPublished - 2004
    EventCollection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference - Albany, NY
    Duration: 2004 Aug 302004 Sep 1

    Other

    OtherCollection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference
    CityAlbany, NY
    Period04/8/3004/9/1

    Keywords

    • Crushable zone
    • Energy absorbing member
    • Optimum design
    • Response Surface Method (RSM)
    • Safety zone
    • Sequential Quadratic Programming (SQP)
    • Train crashworthiness

    ASJC Scopus subject areas

    • Engineering(all)

    Fingerprint Dive into the research topics of 'A study on energy absorbing members for improvement of train crashworthiness'. Together they form a unique fingerprint.

  • Cite this

    Yamakawa, H., Oku, T., Funatsu, K., & Ujita, Y. (2004). A study on energy absorbing members for improvement of train crashworthiness. In Collection of Technical Papers - 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference (Vol. 1, pp. 650-655)