Bottom slamming is normally considered as an impact scenario and calculated by quasi-static approach for scantlings in structural rules. Most studies for slamming are focused on local supporting members (LSM) including plates and stiffeners. However, for primary supporting members (PSM) such as double bottom floors and girders, the requirements and calculation results by different Class Rules for strengthening against slamming loads are of great difference, which is worthy of further study. Prescriptive requirement, known as rule formula based method and direct calculation are commonly carried out for the scantling of PSMs against bottom slamming. The purpose of the paper is to clarify some details in the strengthening of double bottom PSMs, so that the relevant calculation methods can be correctly used in practical design work. By comparing 4 combinations of load mode and boundary condition, we proposed a formula for coefficient distribution of maximum shear force. Furthermore, direct calculation method is used for calibration by case studied, which shows that the modified distribution factor in this paper is more reasonable than that required in CSR. Finally, a practical way of applying the patch loads to the finite elements concerning the real structural arrangement and mesh size.


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    Titel :

    Research on the Strengthening of Double Bottom Floors or Girders Against Bottom Slamming


    Weitere Titelangaben:

    Lecture Notes in Civil Engineering


    Beteiligte:
    Okada, Tetsuo (Herausgeber:in) / Suzuki, Katsuyuki (Herausgeber:in) / Kawamura, Yasumi (Herausgeber:in) / Zhu, Wenbo (Autor:in) / Zhou, SuSu (Autor:in) / Wu, Jiameng (Autor:in) / Zhang, Fan (Autor:in) / Cai, Shijian (Autor:in)

    Kongress:

    Practical Design of Ships and Other Floating Structures ; 2019 ; Yokohama, Japan September 22, 2019 - September 26, 2019



    Erscheinungsdatum :

    2020-10-04


    Format / Umfang :

    26 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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    Hydroelastic Model for Bottom Slamming

    Bereznitski, A. / Postnov, V. | British Library Conference Proceedings | 2001


    On the strength of bottom forward structure against slamming

    Ushijima, M. / Aikawa, N. | Tema Archiv | 1980


    Bottom Slamming on a Floating Airport

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