Experimental and numerical studies on dynamic performances of the hybrid modular floating structure system

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2025-06-20 DOI:10.1016/j.marstruc.2025.103878

Yaqiong Liu , Nianxin Ren , Jinping Ou , Yanwei Li

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Abstract

The present work mainly reports experimental and numerical studies on dynamic performances of the chain-type hybrid multi-module floating structure (HMFS) system under typical wave conditions. For the HMFS system, box-type modules are arranged outermost with functions of floating breakwaters for better anti-wave effect, and semi-sub modules are arranged internally for functions of production and living due to superior hydrodynamic performance. The outermost module is hinged with its adjacent module with an additional Wave Energy Converter (WEC), and semi-sub modules are mutually connected by hinges with torsional stiffness. Numerical analysis has been conducted through ANSYS AQWA based on potential flow theory and structural dynamic method, and scaled physical model tests have been conducted in a wave-current flume laboratory. WECs driven by parallel-shaft gears and hinge connectors with additional linear torsional stiffness are specially designed. The effect of the WEC on the main dynamic performances of the chain-type HMFS system has been studied, and results reveal that it is reasonable and feasible to attach a WEC to the outermost connector for reducing module motion responses and generating wave energy. In addition, the main experimental and numerical results have been compared systematically, which verifies the effectiveness of the coupling dynamic numerical method to a certain extent. Test results of dynamic responses under the survival sea condition demonstrate good motion performance of the system, and the extremum of connector loads can provide an experimental data basis for the design of connectors.

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混合模块化浮式结构系统动力性能的实验与数值研究

本文主要对链式混合多模浮体结构（HMFS）系统在典型波浪条件下的动力性能进行了实验和数值研究。对于HMFS系统，箱式模块布置在最外层，具有浮动防波堤的功能，抗波效果更好；半子模块布置在内部，具有生产和生活的功能，水动力性能更好。最外层模块通过附加的波浪能量转换器（WEC）与相邻模块铰接，半子模块通过具有扭转刚度的铰链相互连接。基于势流理论和结构动力学方法，通过ANSYS AQWA软件进行了数值分析，并在波浪流水槽实验室进行了比例物理模型试验。由平行轴齿轮和具有额外线性扭转刚度的铰链连接件驱动的WECs是专门设计的。研究了WEC对链式HMFS系统主要动力性能的影响，结果表明，在最外层连接器上附加WEC以减小模块运动响应并产生波能是合理可行的。并对主要实验结果和数值结果进行了系统比较，在一定程度上验证了耦合动态数值方法的有效性。海上生存条件下的动力响应测试结果表明，该系统具有良好的运动性能，连接器载荷极值可为连接器的设计提供实验数据依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.