Integrated design method for protection against vibration of offshore platform plate structure

IF 1.5 4区工程技术 Q3 ENGINEERING, MARINE Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment Pub Date : 2024-09-19 DOI:10.1177/14750902241271865

Ziwei Deng, Xuchen Jia, Zijian Li, Xu Sun, Fuzhen Pang, Baocheng Zhang

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Abstract

The paper integrates the modal avoidance method, pedestal design method, and dynamic vibration absorber theory to investigate vibration control technology for offshore platform plate structures. We develop an integrated design method for vibration suppression by controlling the vibration excitation load, vibration transmission, and vibration energy dissipation. Firstly, a modal avoidance design is implemented to suppress vibration transmission along the propagation path of the plate structure. Subsequently, pedestal optimization is conducted for pedestal structure to attenuate vibration excitation at the input end. Finally, dynamic vibration absorber theory is employed to control dominant vibration frequency responses further and achieve multi-target vibration control. Case simulation results demonstrate that the integrated design method reduces the acceleration vibrations level at 113.75, 145.61, and 153 Hz, and this method could guide multi-objective vibration control in offshore platform plate structures.

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海上平台板结构振动防护综合设计方法

本文综合了模态规避方法、基座设计方法和动态减震器理论，研究了海上平台板结构的振动控制技术。我们通过控制振动激振载荷、振动传递和振动耗能，开发了一种综合的振动抑制设计方法。首先，采用模态规避设计来抑制振动沿板结构传播路径的传递。随后，对基座结构进行基座优化，以减弱输入端的振动激励。最后，采用动态吸振器理论进一步控制主要振动频率响应，实现多目标振动控制。案例模拟结果表明，综合设计方法降低了 113.75、145.61 和 153 Hz 的加速度振动水平，该方法可指导海上平台板结构的多目标振动控制。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment ENGINEERING, MARINE-

CiteScore

3.90

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Engineering for the Maritime Environment is concerned with the design, production and operation of engineering artefacts for the maritime environment. The journal straddles the traditional boundaries of naval architecture, marine engineering, offshore/ocean engineering, coastal engineering and port engineering.