基于三维CAD模型的复杂艏、艉船型曲面快速光顺方法及实现  

Fast fairing method for ship-hull surfaces with complex bow and stern based on 3D models

作　　者：周春凯[1] 董枫[2] 罗亮[2] 陈顺怀[2] 廖显庭[1] ZHOU Chunkai;DONG Feng;LUO Liang;CHEN Shunhuai;LIAO Xianting(China Ship Development and Design Center,Wuhan 430064,China;School of Transportation,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]武汉理工大学交通学院,湖北武汉430063

出　　处：《中国舰船研究》2016年第4期7-13,共7页Chinese Journal of Ship Research

基　　金：中国舰船研究设计中心研发基金资助项目

摘　　要：利用船舶型值和复杂艏、艉特征参数等数据,结合三维CAD设计软件进行初步建模,提出一种基于三维CAD软件模型的复杂艏、艉船型曲面快速光顺方法,实现复杂艏、艉船型曲面的快速三向光顺。利用生成的光顺仿真模型和曲面求交算法,获得艏、艉部位任意型值点数据。该方法将拼接和光顺处理分为三个阶段来实现,即曲面重建、G1光顺拼接、曲面微调3个阶段。相较于三维CAD软件中基于单个控制点调整的曲面拼接光顺方法,该方法能够大幅提高曲面拼接与光顺的处理效率,同时曲面的内在连续性和型值点数据精度也得到了保证。Based on the point net of offset and complex ship-hull parameters, using preliminary surface models made by 3D CAD software, this paper presents a fast fairing method for ship-hull surface modelling with complex bow and stern based on 3D models. With fairing simulation 3D-models and the surface intersection algorithm, the fairing point net of offset for arbitrarily complex bow and stern of ship-hull surfaces is first obtained. The method then divides the splicing and faring process into three stages: surface reinterpolation,G1-splicing, and surface fine-tuning. In contrast to traditional splicing and faring method basedon a single control point of surface, this method improves the efficiency of surface's splicing and faring greatly, while the interior continuity of the surface and the precision of the offset points can be guaranteed.

关 键 词：三维CAD模型 复杂艏、艉 船型曲面 拼接 光顺 

分 类 号：U622.9[交通运输工程—船舶及航道工程]