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Chinese Journal of Ship Research, Volume. 18, Issue 1, 223(2023)

Impacts of natural frequency and relative stiffness of stiffened plate on nonlinear dynamic response

Wei JIANG1, Guangwei HAN1, and Yan ZHANG1,2
Author Affiliations
  • 1School of Ocean Engineering, Harbin Institute of Technology (Weihai), Weihai 264209, China
  • 2State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian116024, China
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    AbstractGet PDF(in Chinese)
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    Objectives

    This paper studies the influence of impact load on the dynamic response of marine stiffened plates.

    Methods

    According to the relevant specifications and references, the sizes of hull stiffened plates are determined. Finite element software ANSYS is used for modeling with Shell 181 element. The load is applied uniformly on the surface of the stiffened plate, and its boundary condition is fixed. The impacts of the natural frequency and relative stiffness of the stiffened plate on its nonlinear dynamic response under impact load are then analyzed.

    Results

    The results show that the piecewise function relations expression of natural frequency and deflection response are obtained according to the different influences of geometric dimensions. The relative stiffness of the stiffened plate affects its deformation mode, and the critical values are 0.2 and 19.

    Conclusions

    These quantitative conclusions have important reference value for the safety evaluation of hull structures.

    Keywords
    impact loadnatural frequencyrelative stiffnessstiffened plate
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    Wei JIANG, Guangwei HAN, Yan ZHANG. Impacts of natural frequency and relative stiffness of stiffened plate on nonlinear dynamic response[J]. Chinese Journal of Ship Research, 2023, 18(1): 223

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    Paper Information

    Category: Ship Structure and Fittings

    Received: Sep. 4, 2021

    Accepted: --

    Published Online: Mar. 18, 2025

    The Author Email:

    DOI:10.19693/j.issn.1673-3185.02515

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology