Realization Of The Virtual Enterprise Workflow Modeling And Pdm Systems

The web-based data transfer technology provides the foundation for the sharing of global electronic information. Virtual enterprise benefites from the development of computer network and multimedia technology, and is a kind of enterprise pattern which can do hardwares supplying, designing, manufacturing, distribution , management coordinatedly and duly through uniting temporary allied suppliers, manufacturers, dealers and clients. In order to achieve sharing benefit and cost burden, grasp rapidly variational market opportunities, these enterprises contribute their core ability to the alliance in the domains such as design, manufacture, retail and so on.This paper firstly discusses the appearance, the characters, classify and development of virtual enterprise and the needed conditions for building virtual enterprises, and moreover, explains the function pattern of virtual enterprise, and then analyses the concept of supply chain and basic models, and moreover, expatiates on the network model of virtual enterprise from the angle of smart supply chain, in succession, models the entire working process after analyzing the basic model of virtual enterprise and briefly introducing the basic knowledge of UML. The details are the following: in the phase of Requirements Analysis, describe the object which is abstracted from the process using the technology of OOA. In the phase of material design, this paper does level fragmentation of the working process of virtual enterprise under role driving(until the atom activity which can not be fragmented more), and visualized characterization of the working objects(class) abstracted in the process, presents the whole working process UML-uc system collectivity model and does the modeling description of four substreams created in the fragmentation process. This paper presents the part dynamic models and creates frame codes for the class diagrams. In the phase of material design, this paper presents the part dynamic models and creates frame codes for the class diagrams. Considering utilize the advancedallied pattern of enterprise, and recurring to the ripe PDM technology at present, the latter part explaines the realization and application of PDM system in establishing virtual enterprise, thus makes the virtual enterprise impossble.