面向对象的船体结构实体造型建模及应用研究

【作者】 李伟；

【导师】 纪卓尚； 戴寅生； 林焰；

【作者基本信息】 大连理工大学 ， 船舶与海洋结构物设计制造， 2000， 硕士

【摘要】 实体造型技术已在工程设计领域得到越来越广泛的应用，理论也日益成熟；面向对象方法和技术是描述现实世界的全新方法技术；Parasolid是一种实体造型的核心软件，是一种强大的建模器。本文就是利用Parasolid，运用面向对象方法建立船舶结构的三维实体模型，并开发了船舶结构实体造型的原型系统。本文工作是力图建立一个较合理的数据结构，实现实体造型的基本功能如旋转、放大、平移、三视、剖视以及 一些计算功能。 本文共分为六章。第一章绪论部分介绍了实体造型技术的发展和本文的工作意义；第二章对实体造型的概念和几种表示方法进行了阐述；第三章主要阐述了Parasolid的一些概念、模型结构、基本操作以及图形输出等；第四章介绍如何利用面向对象的方法建立船舶结构的三维实体模型，同时给出相关的数据结构；第五章对船舶结构实体造型的原型系统的功能进行了说明，分析了各个模块之间的联系，给出了若干应用实例；最后一章对全文进行了总结和展望。 船舶结构实体造型原型系统是在 Windiows NT工作站下，利用 VisualC⁺⁺6.0开发环境，并结合三维图形库OpenGL来开发的，具有友好的人机交互界面。实践表明，该系统对船体结构的实体建模是有效的、方便的。更多还原

【Abstract】 The solid modeling has been widely used in the field of engineering design. The corresponding theory is becoming more and more mature. The method and technology of oriented object are fire-new one which are used to describe and simulate the practical world. Parasolid is a kind of kernel for solid modeling and it is also a powerful solid modeler. The paper mainly concentrates on exploring 3D solid modeling for hull structure with the oriented object technology,based on Parasolid. Meanwhile,an prototype system has been developed to test the idea. Emphases of the paper are on constructing a reasonable data structure and realizing the basic function of solid modeling such as rotation,zoom,pan and section view .etc.The paper is divided into six chapters. The first chapter introduces the evolution history of solid modeling and the object of the paper. The second chapter explains the basic concepts of solid modeling and describes the popular researching methods. The third chapter discusses the definitions,model structures,basic operations,and graphical output,etc. in Parasoid. The fourth chapter tells how to build 3D solid model for hull structure applying the oriented object technology,furthermore,the corresponding data structures are presented. The fifth chapter shows the functions of the system,analyzes the mutual relations between all modules and gives several examples. And the last chapter summarizes the whole paper .The prototype system in this paper is developed with MS Visual C++6.0 and OpenGL on Windows NT. The system provided friendly graphical user interface. It has been proved that the system is effective and convenient in modeling hull structure.更多还原