Study On The Key Technology Of A Design Platform For The Bus Body

In the design and manufacture of the bus, bus body is of great importance. Design quality improving and the development period shortening of the bus body turn to be very important to enhance the marketing competitive ability. Therefore, the study of digital design development platform of the bus body has significant theoretic meaning and application value. Combining the project of Tenth Five-Year Plan of Scientific and Technologic Committee of Jiangsu province, system of digital design of NANVEC A40 vehicle, the key techniques of digital bus body design platform were studied mainly by this paper. The main research work is as following:1. Based on the function requirement analysis, object-oriented analysis and design concept were applied on system software static function and dynamic action analysis. With the advanced techniques such as Struts, Spring and Hibermate, based on J2EE, a digital development Framework, module and network was proposed.2. Based on STEP/XML, the method of sharing and exchanging the bus body digital design data was promoted. Meanwhile, the key techniques were introduced in this paper. XML is used to publish product data, while STEP could describe product data and these will map into XML protocol development. This would be the best way for the internet operation of complex data.3. The bus body development system was analyzed, the problems were studied, KBE and knowledge management concept and techniques were discussed, and finally, a new bus body design information integrated structure was proposed. The open design environment ws utilized, all life period of the product was supported, and a new route for the product design was offered.4. Based on the PDM system with Web techniques, the bus body cooperative design platform and bus body CAX integrated design system were established to accelerate design and development.5. A distributed design information management system based on J2EE for the bus body CAD/CAE information integration was developed and now it is being applied.The results of the investigation mainly come from interdisciplinary and comprehensive application. The developed system is highly open and applicable.A service platform for bus body digital development was established to accelerate the bus body design.