为解决脐带缆全尺度有限元建模进行应力预报带来的超大计算规模问题，本文提出多层次建模方法。首先，针对单位长度脐带缆构建详细有限元模型，通过典型加载反演出视为梁弯曲力学模型的脐带缆本构模型；然后，基于Orcaflex软件建立考虑风浪流载荷及其与上部母船相互作用的有限元模型进行整体水动力分析，获得不同浪向角下脐带缆工作过程中受到的张力与弯矩；最后，通过对单位长度模型施加所求得张力与弯矩载荷，实现对脐带缆内部应力的精准预报。研究结果可提供船用脐带缆在海洋环境下应力的准确预报，为脐带缆的疲劳分析提供技术基础。
A multi-level modeling method is proposed to solve the problem of large scale computation caused by full-scale finite element modeling of umbilical cord cable. Firstly, a detailed finite element model of the umbilical cord cable per unit length is constructed, and the constitutive model of the umbilical cord cable, which is regarded as a beam bending mechanical model, is derived by typical loading; Based on Orcaflex software, a finite element model considering wind wave, current load and interaction with the upper mother ship is established to analyze the whole hydrodynamic force. Finally, by applying the tension and bending moment load to the unit length model, the accurate prediction of the inner stress of the umbilical cord cable is realized. The research results provide accurate prediction of stress of ship umbilical cable in marine environment and technical basis for fatigue analysis of umbilical cable.
2025,47(24): 163-168 收稿日期：2024-12-4
DOI：10.3404/j.issn.1672-7649.2025.24.026
分类号：U671.99
基金项目：江苏省海洋资源开发研究院开放基金项目（JSIMR202009）
作者简介：顾中南(1998-),男,硕士研究生,研究方向为船舶与海洋结构物设计与制造
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