面向FEM快速建模的船体模型数据处理算法  

Ship hull model data processing algorithm for fast FEM modeling

作　　者：李瑞[1] 王明发 孟昭闯 刘国磊 邱永添 LI Rui;WANG Mingfa;MENG Zhaochuang;LIU Guolei;QIU Yongtian(School of Naval Architecture and Ocean Engineering,Dalian University of Technology,Dalian 116024,China;Designing and Research Institute,Dalian Shipbuilding Industry Co.,Ltd.,Dalian 116011,China)

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024 [2]大连船舶重工集团有限公司设计研究院,辽宁大连116011

出　　处：《中国舰船研究》2024年第5期49-56,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51979034);大连市科技创新基金资助项目(2021JJ12GX025)。

摘　　要：[目的]为提高船体有限元几何建模效率,解决船舶设计软件导出的船体模型无法直接应用于有限元几何建模的问题,提出一种基于XML文件数据的几何模型处理方法。[方法]以AVEVA Marine(AM)软件导出的船体XML文件为研究对象,通过对文件的数据结构解析,明确几何模型的数据表达规则,依据船体有限元几何建模规范,通过修改模型数据实现对船体模型的几何修正,包括对角隅、开孔等构件的删除、简化处理,对球扁钢和肘板的转化处理,对型材和板缝的移动处理。[结果]实际运用结果表明,处理后的船体几何模型可直接导入有限元软件HyperMesh中,符合有限元实体几何建模规范,保留了原模型材料、板架厚度等相关属性。[结论]与人工建模相比,测试分段实体几何建模效率显著提高,所提方法有助于船体设计模型复用、提高有限元几何建模效率。[Objective]In order to improve the efficiency of the finite element geometric modeling of hulls,to address the problem in which hull geometry models exported by ship design software cannot be directly used in finite element modeling,this study propose a geometric model processing method based on the XML file data.[Methods]An Extensible Markup Language(XML)file of a hull exported by AVEVA Marine(AM)software is taken as the research object.First,the data expression rules of the geometric model are clarified through the analysis of the data file structure.Then,on the basis of the hull finite element modeling specifications and model data modification,the proposed algorithm can automatically delete and simplify components such as notches and holes,convert bulb flat and brackets,and move profiles and plate seams.[Results]The processed hull geometry model can be directly imported into finite element software Hyper-Mesh,which complies with the finite element modeling specifications and retains the original model material,plate frame thickness and other related attributes.[Conclusions]Compared with manual modeling,the efficiency of testing segmented solid geometric modeling is significantly improved.The proposed method can enable the reuse of ship design models and improve the efficiency of finite element geometric modeling.

关 键 词：快速有限元分析 船体模型 模型数据 数据转换 XML格式 AVEVA Marine软件 

分 类 号：U662.9[交通运输工程—船舶及航道工程] TP391.9[交通运输工程—船舶与海洋工程]