Volume 17 Issue 1
Mar.  2022
Turn off MathJax
Article Contents
CHEN Y Q, ZHANG Y, ZHANG X T. Modelling methods for complex interconnection of very large floating structures based on discrete-module-beam hydroelasticity theory[J]. Chinese Journal of Ship Research, 2022, 17(1): 117–125, 146 doi: 10.19693/j.issn.1673-3185.02230
Citation: CHEN Y Q, ZHANG Y, ZHANG X T. Modelling methods for complex interconnection of very large floating structures based on discrete-module-beam hydroelasticity theory[J]. Chinese Journal of Ship Research, 2022, 17(1): 117–125, 146 doi: 10.19693/j.issn.1673-3185.02230

Modelling methods for complex interconnection of very large floating structures based on discrete-module-beam hydroelasticity theory

doi: 10.19693/j.issn.1673-3185.02230
  • Received Date: 2020-12-18
  • Rev Recd Date: 2021-03-11
  • Available Online: 2022-02-23
  • Publish Date: 2022-03-02
    © 2022 The Authors. Published by Editorial Office of Chinese Journal of Ship Research. Creative Commons License
    This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  •   Objective  The aim of this paper is to proposes new methods for modelling a very large floating structure (VLFS) with complex connections in the framework of the discrete-module-beam (DMB) hydroelasticity theory, and makes a comparison with the existing methods.   Method  First, a brief introduction of the DMB-based hydroelasticity analysis method is given, followed by procedures for calculating the dynamic response of VLFS under regular waves. A structural stiffness matrix is then defined to model connections with complex forms in VLFS. Corrections are made to the relationship between the forces of two lumped masses and their displacements, obtaining a revised structural stiffness matrix and excitation force matrix, and solving the new hydroelastic equations. Finally, the varying trends of the structural dynamic response of VLFS against different bending stiffness by four methods are explored, and the corresponding reasons for their response differences are analyzed.   Results  The results show that all four methods are capable of precisely predicting the hydroelastic response of VLFS with complex forms of interconnection.   Conclusion  The methods in this paper extend the application of the DMB-based method in predicting the dynamic response of non-continuous VLFS, such as multi-hinged VLFS or VLFS with fracture places.
  • loading
  • [1]
    WANG C M, TAY Z Y. Very large floating structures: applications, research and development[J]. Procedia Engineering, 2011, 14: 62–72. doi: 10.1016/j.proeng.2011.07.007
    [2]
    PRICE W G, WU Y S. Hydroelasticity of marine structures[M]. North Holland: Elsevier Science Publishers, 1985: 311-337.
    [3]
    KHABAKHPASHEVA T I, KOROBKIN A A. Hydroelastic behaviour of compound floating plate in waves[J]. Journal of Engineering Mathematics, 2002, 44(1): 21–40. doi: 10.1023/A:1020592414338
    [4]
    SENJANOVIĆ I, MALENICA Š, TOMAŠEVIĆ S. Investigation of ship hydroelasticity[J]. Ocean Engineering, 2008, 35(5–6): 523–535. doi: 10.1016/j.oceaneng.2007.11.008
    [5]
    LOUKOGEORGAKI E, MICHAILIDES C, ANGELIDES D C. Hydroelastic analysis of a flexible mat-shaped floating breakwater under oblique wave action[J]. Journal of Fluids and Structures, 2012, 31: 103–124. doi: 10.1016/j.jfluidstructs.2012.02.011
    [6]
    DING J, WU Y S, ZHOU Y, et al. A direct coupling analysis method of hydroelastic responses of VLFS in complicated ocean geographical environment[J]. Journal of Hydrodynamics, 2019, 31(3): 582–593. doi: 10.1007/s42241-019-0047-8
    [7]
    LU D, FU S X, ZHANG X T, et al. A method to estimate the hydroelastic behaviour of VLFS based on multi-rigid-body dynamics and beam bending[J]. Ships and Offshore Structures, 2019, 14(4): 354–362. doi: 10.1080/17445302.2016.1186332
    [8]
    SUN Y G, LU D, XU J, et al. A study of hydroelastic behavior of hinged VLFS[J]. International Journal of Naval Architecture and Ocean Engineering, 2018, 10(2): 170–179. doi: 10.1016/j.ijnaoe.2017.05.002
    [9]
    ZHANG X T, LU D. An extension of a discrete-module-beam-bending-based hydroelasticity method for a flexible structure with complex geometric features[J]. Ocean Engineering, 2018, 163: 22–28. doi: 10.1016/j.oceaneng.2018.05.050
    [10]
    ZHANG X T, LU D, GAO Y, et al. A time domain discrete-module-beam-bending-based hydroelasticity method for the transient response of very large floating structures under unsteady external loads[J]. Ocean Engineering, 2018, 164: 332–349. doi: 10.1016/j.oceaneng.2018.06.058
    [11]
    WEI W, FU S X, MOAN T, et al. A time-domain method for hydroelasticity of very large floating structures in inhomogeneous sea conditions[J]. Marine Structures, 2018, 57: 180–192. doi: 10.1016/j.marstruc.2017.10.008
    [12]
    JIN C, BAKTI F P, KIM M. Multi-floater-mooring coupled time-domain hydro-elastic analysis in regular and irregular waves[J]. Applied Ocean Research, 2020, 101: 102276. doi: 10.1016/j.apor.2020.102276
    [13]
    FU S X, MOAN T, CHEN X J, et al. Hydroelastic analysis of flexible floating interconnected structures[J]. Ocean Engineering, 2007, 34(11–12): 1516–1531. doi: 10.1016/j.oceaneng.2007.01.003
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(11)  / Tables(2)

    Article Metrics

    Article Views(599) PDF Downloads(38) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return