GEOMETRICAL MODELLING TECHNIQUES TO DEVELOP A METAL STRUCTURE DESIGN SPACE

摘要

The objective of the work is the development of an integrated object-oriented environment (design space) for the computer-aided design of a metal structure. We call as metal structure design space the object-oriented collection of the following elements: 1. a platform - CAD/CAM/CAE system, for creating parametrical 3D models of details and assembly units, and also to save them in a database. 2. The user applications - the programs realizing additional opportunities of designing and operation which simplify frequently used actions for a class of products.3.A database - which containing typical parametrical models of details and assembly units for metal structure. 4. The knowledge base - which containing relations between objects parameters and a condition of their inclusion into assembly units. 5. Rational methods of creation of geometrical models for the given class of products (metal structures). The metal structure is designed on the basis of a formerly prepared structure of a product by association of complex parts and items, typical for the given group of geometrical constructions to original objects composed of the previously developed standard parts and assembly units. The generalized structure of product is or-and graph. The techniques of rational filling of databases and knowledge bases are offered.