基于实测波频数据的MNPP多体动力特性评估
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作者单位:

1.大连理工大学工业装备与结构分析国家重点实验室;2.中国海洋石油有限公司研究总院;3.武汉第二船舶设计研究所

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中图分类号:

P75

基金项目:

国家重点研发计划(2021YFA1003501),国家自然科学基金(NO.U1906233),山东省联合(2019JZZY010801),深圳市自由探索类基础研究项目(2021Szvup021)资助。


Multibody Dynamical Performance Evaluation of Marine Nuclear Power Platform Positioning SystemBased on Measured Data
Author:
Affiliation:

1.State Key Laboratory of Structure Analysis for Industrial Equipment,Dalian University of Technology;2.China National Offshore Oil Corporation Research Institute;3.Wuhan Second Ship Design Institute

Fund Project:

This research was financially supported by the National Key R&D Program of China (No.2021YFA1003501), National Natural Science Foundation of China (No.U1906233), the Key R&D Program of Shandong Province (2019JZZY010801). the Central Guidance on Local Science and Technology Development Fund of Shenzhen (2021Szvup021).

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    摘要:

    海洋核动力平台(Marine Nuclear Power Platform,MNPP)可填补我国在民用核动力船舶领域的技术空白,对于海上能源的开发利用具有重大意义。我国首座海洋核动力平台定位系统采用软刚臂单点系统的方案,与渤海众多服役FPSO具有相同的系泊方式。利用现有的渤海FPSO实测数据,开展海洋核动力平台定位系统多体动力特性分析是确保其系泊能力和安全性的研究重点。首先建立了海洋核动力平台定位系统的多刚体动力学模型;其次通过核动力平台与渤海某FPSO的响应幅值算子RAO,计算了FPSO船体实测数据与核动力平台响应的比例系数;然后根据FPSO船体实测数据计算了核动力平台6自由度数据,并采用经验模态分解(EMD)方法保留原始数据的波频成分;最后基于核动力平台波频6自由度数据,计算了定位系统的系泊回复能力和各铰节点的受力行为。通过与FPSO软刚臂系泊系统受力状态进行对比分析,验证了核动力平台定位系统在实测海况下设计的合理性。该方法可有效的应用于定位系统的多体动力性能分析,能为海洋核动力平台系泊结构设计和安全运行提供科学的分析手段。

    Abstract:

    Marine nuclear power platform can fill the technical gap in the field of civil nuclear power ships in China, which is of great significance for the development of new energy. The first marine nuclear power platform in China chooses the positioning mode of soft yoke mooring system (SYMS), which has the same mooring mode as many FPSOs in Bohai. The analysis of its multi-body dynamic characteristics is the research focus to ensure the mooring capacity and safety of the positioning system by using the existing measured data of Bohai FPSO. A multi-body dynamic model of marine nuclear power platform positioning system is established. Then the response amplitude operator RAO of the nuclear power platform and a FPSO in Bohai is used to derive the 6-DOFs response scale coefficient. Based on the converted 6-DOFs response, the mooring recovery capability of the positioning system and the force behavior of each hinge joint are calculated.At the same time, the calculation results are compared with the force of the FPSO soft yoke mooring system, and the analysis results verify the rationality of the design of the nuclear power platform positioning system in the measured sea condition.

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  • 收稿日期:2022-07-26
  • 最后修改日期:2022-09-06
  • 录用日期:2022-09-16
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