【作者】 叶霖；

【导师】 王跃辉；

【作者基本信息】 大连海事大学 ， 轮机工程， 2004， 硕士

【摘要】 本论文研究，开发了基于PDM的船用阀门CAD系统。开发过程以AutoCAD 2000为软件平台，Visual C++6.0为主要开发环境，主要运用面向对象的AutoCAD二次开发工具Object ARX，并结合工程图样数据的特点，借鉴PDM系统管理图档的思想技术、SQL语言等得以实现。 软件开发以“向导式计算与设计”的总体设计思想为指导，将系统划分为四大功能主模块、一个工程数据库、一个图形信息管理数据库和系统菜单文件、幻灯片库等一些辅助文档。论文论述了系统计算模块等四个主模块的设计，并用大量的篇幅阐述了一个功能齐全、结构开放的图形信息管理子系统的设计、开发和应用过程。主要完成成果和工作如下：系统参数计算模块主要构造各个计算类来完成阀门系统基本参数和静态参数计算的工作；阀门产品图形数据信息管理子系统完成阀门产品数据图形建库、样本库管理、以及用户与整个CAD系统进行通讯和数据交换的工作；阀门计算机辅助选择模块完成阀门系统元件选择的工作，并对选中元件的基本数据进行过程数据的管理。 整个系统软件与AutoCAD浑然一体，界面友好，人机交互性能高，用户可以运用多种驱动方式进入模块，使用非常方便。软件的最终实现，将使船用阀门系统设计过程对设计者专业知识和经验的依赖性更小，系统设计质量更高，设计周期更短，更能体现船用阀门CAD系统的强大功效。更多还原

【Abstract】 The purpose of this dissertation is to investigate and develop a PDM_based Marine Valve CAD System. The application is named Marine Valve CAD systemic software, which based on AutoCAD R2000 and complied in Visual C++6.0 environment. During the process of programming, the powerful development technique-Object ARX is used, and make the others including Engineering drawing files, PDM (Product Data Manage), SQL (Structure Query Language) as a supplement.Aimed for CAD in the normal process of traditional Marine Valve-system design, the software is made up by some corresponding modules and accessories, which includes four main function modules, one project database, one graphic information database, some menu files and slide files, and some accessories like these. It is followed all those main modules are discussed in this essay: a module of system parameter’s design and calculation, a suo-system of graphic information management, a module of CAS(Computer Aided Selection), a database of valve products sample, and another amended sub-system of the manifold block CAD.They are considered friendly and standard in the view. With great capability of communication between computer and the users, this software is convenient and simple to operate very much. Especially the conception which is "calculation and design with wizard" is built up and applied in the modules, this makes the process of design less dependence on user’ s experience, and makes the design result better in quality, faster in speed.All of these embody the great priority of the marine valve CAD system.更多还原