Study And Application On PDM-Based Distributed Virtual Design Platform

PDM is the base-enabled platform to structure distributed virtual design platform, and the base-enabled tool of virtual product development. PDM system provides the information management of the product entire life cycle, and constructs a concurrent collaborative environment for product design and manufacture in the whole enterprise. PDM, which is the enterprise information intergration platform, can integrate all kinds of application systems in the enterprise and can implement the standardization management of product data effectively.Virtual design can integrate CAx application systems, and its aided functions strengthen greatly, which is favorable for the intergration of computer aided design, manufacture, assembly, analyse and the simulation of product dynamic capability. And virtual design can sufficiently utilize network resourcesand implement distributed concurrent design. The exercise of virtual design has important significance to shorten the cycle of product development, to economize the cost of product development and manufacture and to improve productivity.Therefor, it is very necessary to research the PDM-enabled distributed virtual design platform; and it is very essential to integrate all kinds of CAx application system and explore a high efficiency, fast design method in PDM platform.This paper analyses the architecture of current type commerce PDM systems and presents the function frame of PDM system supporting distributed virtual design. And this paper analyses the architecture and characteristic of PDM-based distributed virtual design platform. PDM-based rapid type-changed design system is stressly discussed.This paper discusses the advantage of several Java-based integration technologies and bringes forward the J2EE-based enterprise application integration frame.This paper researches and realizes the PDM-based strip coiler distributed virtual design in collaboration with Wuhan Iron & Steel (Group) Corporation andaddresses the integration technology of application system. Strip coiler is important equipment in strip steel production.The distributed virtual design platform introduces the technology of case-based reasoning, namely, by calculating the similarity between the historical cases in database and the current design requirements, the best analogical case can be retrieved. Then, by adapting it according to rules or knowledge, a new design case is available. The system integrates the successful cases, design knowledge and experiences accumulated by enterprises; and improves the practicability and intelligence of the strip coiler design system.CAx integration technology with PDM platform is studied. A prototype of CAx integration with PDM platform is constructed through COM/DCOM technology using VC++ 6.0. Three levels of integrations, envelopment, interface and seamless integrations are realized. The digital platform for design, engineering analysis and simulation of coiler is constructed successfully.The engineering applications have proved that the system can shorten lead-time, lower costs and decrease loss effectively. The research results can be applied to developments of other products.