Research On Generalized Product Modeling Method

Modeling method is a key supporting technology of manufacturing industry in 21st century. An appropriate product model has great influence on the success of product development. Based on the idea of ontology, this article aimed to explore the elements of product information such as mechanicals from the structure and history aspect and the product modeling method based on generalized duality its application schema is studied fully. The main efforts and contribution of this dissertation are as follows:1) The basic concept of generalized design including: the concept, schema and key issues are discussed and the elements of generalized product information are presented. Combining the idea of ontology and the O-O method,the generalized product model is studied and the generalized information unit, relation unit and the concept of generalized duality unit are put forward and the XML expression of generalized product model is presented. Finally, the architecture of product modeling system is presented too.2) The product structure modeling method for generalized product design is studied. The concept of generalized structure unit and structure relate unit and there property model are presented, including six basic structure property such as management, design, view, function, engineering and evaluation etc and three relation property such as function, position and motion etc. And based on these properties the layer model of generalized structure information is constructed. The uniform schema for description of product structure information is implemented.3) The product history modeling method for generalized product design is studied. The concept of history unit and history relate unit and there property model are presented. As to design process, nine basic interaction activities such as search, paint etc and four basic thinking activities such as decision, intent etc are put forward. And based on these properties the layer model of generalized history information is constructed. The uniform schema for description of product history information is implemented.4) The snap mechanism of generalized product design information, the management of design knowledge and the back mechanism of design history technology is studied. A generalized product modeling system based on Solidworks which is a kind of modeling software is developed. The system has been used and satisfying result has been attained.