The Research Of BOM In Ship-Product Data Management

As an integrated platform for enterprise information, product data management (PDM) has been applied to more and more enterprises. At the same time, practically product structure definition and configuration management under PDM architecture is one absolutely necessary core function of enterprise e-manufacturing supporting platform. As the result of increasing market competition and rapid change of customer's requirements, manufacturing enterprises, especially those which develop and produce large and complex products, for example, the ship designing and manufacturing enterprises, promote new requirements against product structure definition and configuration management.This thesis therefore steps from the requirements of enterprise product design management and focus on studies on theory , method and implementation technology of production structure definition and configuration management to improve PDM systems' applicability , especially in BOM information's management, which is expected to offer a solution for vast problems in information management upon ship building enterprises.Firstly , thesis introduces the situation and problems of ship manufacturing enterprises, expounds background and function of PDM technology, and proposes the architecture of PDM system. With that, thesis describes the key function module of PDM system, for example , database ,document management, product structure configuration, item management, and so on.Subsequently, after introducing basic module of PDM, according to the background of ship enterprise to execute PDM, the architecture of product data management based on PDM in shipbuilding is presented. The function and the information model of system, and the customization of the PDM system are described. Based on the product structure tree, having discussed the data trait of ship, a model of product structure and configuration management in shipbuilding is presented to describe the configuration treeof ship product. Applying this model of product definition, enterprises can manage all the information of ship product.This thesis explains the connotation of product structure management on relevant theory's basis. A product structure information integration model is then built up over analysis on product structure definition and configuration process. And the thesis centers around this product structure information integration model and works further over product structure management in PDM. Theory and method of this management portion are discussed respectively with production structure management , configuration management. The mode from designing to manufacturing stage in product structure management is also dissertated. Finally the thesis puts forward a PDM architecture that supports product structure management from the angle of software implementing. Technology of Internet, database, security, object-orientation and configuration management are generally included as this architecture's supporting technologies. This thesis primarily makes a thorough study of product structure description methods with their advantages and disadvantages, data structure, which in a whole help to implement above-defined product structure management..In the section of summary, the disadvantages of the thesis are presented, which form the objectives for the future research and works.