基于加密型值表的船体三维数据库  

3D Ship Hull Database Based on Densitified Table of Offsets

作　　者：倪银钢 王智洲 刘春雷 NI Yingang;WANG Zhizhou;LIU Chunlei(Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China)

机构地区：[1]上海船舶研究设计院,上海201203

出　　处：《船舶设计通讯》2020年第S01期41-47,共7页Journal of Ship Design

摘　　要：基于加密型值表建立船体高精度数据库,将曲率计算用于船体数据库的简化,可大幅度提高船体相关计算精度。编写VC程序完成加密型值表的自动识别和读取。采用有限差分法计算船体曲线曲率,基于曲率变化完成船体数据库的自适应简化。以散货船“太行128”为例计算验证,数据简化率在85%以上。通过OpenGL三维可视化验证船体数据库的完整性,通过计算船体的静水力特性验证数据库的准确性。静水力计算结果和装载手册中的数据相比较,几乎无精度损失,证明了数据库的高精确性。Based on densitified table of offsets,high accuracy of ship hull database was built by curvature calculation to simplify the hull database,greatly improving the calculation accuracy.VC program was written to identify and read densitified table of offsets automatically.Finite difference method was used to calculate curve curvature.According to the curvature changes,the database was simplified adaptively.Bulk carrier“Taihang 128”was taken as an example and data reduction rate was above 85%.The integrity of the ship hull database was verified by OpenGL 3D visualization,by calculating the hydrostatic performances to verify the accuracy of the database.The calculation results and the data in loading manual were compared,proving that there was almost no loss of accuracy and the high accuracy of the database.

关 键 词：加密型值表 船体三维数据库 静水力特性计算 曲率 

分 类 号：U661[交通运输工程—船舶及航道工程]