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Research and Development of Data Management System for Vehicles Virtual Assembly

Author: WangMingBo
Tutor: ChaiShanï¼›JiaoXueJian
School: Shandong University of Technology
Course: Vehicle Engineering
Keywords: Virtual Assembly Data Extraction Data Management XML
CLC: TP311.52
Type: Master's thesis
Year: 2011
Downloads: 37
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Abstract


Virtual Assembly is one of important research branch of Virtual Manufacturing and an important link of products digital definition. It has been widely used in the virtual technology and simulation field. The use of this technology reduces development costs, shorts the product development cycle and enhances the competitive ability of the enterprises. Information data is the basic elements of the virtual assembly and an indispensable part of the assembly links. So management data directly influences assembly quality and effectiveness of the virtual assembly system. It is great meaning of realizing data unified management of the virtual assembly system to establish virtual assembly environment, and promotes the development and application of virtual assembly technology.First, this thesis defines the virtual assembly modeling theory in virtual reality System and introduces geometric modeling, movement modeling and physical modeling. According to the characteristics of virtual assembly, geometric modeling has been divided into three layers to reusing CAD system information.The analysis of modeling theory has confirmed the data complexity in the virtual assembly system and provide necessary guarantee for development of virtual assembly data management system.According to different in the assembly, data extraction has been divided into three parts:before assembly data extraction, assembling data extraction and assembly finish data extraction, and studies all the dates and ex traction algorithms. At the same time, the virtual assembly data management system has fulfilled the assembly tree building and the information mapping of various part levels and introduces related technologies of UG/Open and internal data structure of STL triangles. It provides a powerful guarantee for data management system realization.Based on the data management technology research, this paper puts forward with XML document finishing data management and provides many XML files description, such as detailed data, constraints data, assembly body structure data, assembly path and so on. This paper also researches the parsing techniques of the XML file and realizes data unified management and the information transmission of various links. Finally, based on Window XP platform and VC++2005 programming circumstances, the prototype system is developed using C++programming languages and OSG scene management technique. Using main reducer as example, the information management system is feasible and effective.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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