船舶折边肘板建模与有限元划分的设计与实现

摘要

Bracket is a common component for connection in ship structure and other steel structures,and flanged bracket is frequently used in flanged docking for main ship components.In order to enhance the efficiency of modelling flanged bracket,we design the parametric 3D solid modelling process for flanged bracket.According to the modelling process,we discuss the methods of parametric bracket contour generation and flanges information storage,provide the algorithms for coordinate transformation and flange rotation,and study the objectoriented programming and finite element method.Moreover,we import MSC.Patran for mesh division,realise the transformation from CAD model to finite element analysis model,and present PDM integration.Taking AutoCAD as the development platform,VS.Net as the programming environment,and ObjectARX as the development tool,we implement the object-oriented parametric solid modelling system for flanged bracket.%肘板是船舶结构及其它钢结构中常用的连接构件,折边肘板经常用于船舶主构件的折边对接中.为了提高折边肘板建模的效率,设计折边肘板参数化三维实体造型过程;根据造型过程,探讨肘板轮廓参数化生成及折边信息存储方法;给出坐标转换及折边旋转算法;研究面向对象与有限元方法;并导入MSC.Patran进行网格划分,实现CAD模型到有限元分析模型的转化;给出PDM的集成:以AutoCAD为开发平台,VS.Net为编程环境,ObiectARX为开发工具,实现了面向对象的折边肘板参数化实体造型.