CAD FEATURES IN THE DESIGN OF A COMPLEX

The PURPOSE of this work is to identify and study the features of the computer-aided design system (CAD) arising in the design of a complex and having a significant influence on the design process and its results. METHODS. The complex as the most composite type of a product and the object of design is studied on the principles of system and block-oriented approaches using the method of structural analysis. The main parts of the complex and its connections, as well as CAD features and requirements are identified using the method of analysis and subsequent synthesis. RESULTS AND THEIR DISCUSSION. Having studied the structure of the complex the requirements and features of its CAD were defined. The complex is considered as a set of structurally, functionally and operationally finished products, and their components, which are also complex products with their individual characteristics, internal structure and connections. It is shown that the creation of the complex is a complex technical and organizational task. The design of the complex is performed by separate teams differing in the level of education, design experience, technical and organizational support of the works. The big actual duration of works on complex design is substantiated. The analysis is performed and the requirements for the CAD system of the complex have been developed including: the need for information support during the entire design process; the need to ensure the compatibility of the working subsystems at the hardware and software levels; the possibility to apply various design methods, etc. The features of the CAD of the complex are formulated. It is shown that the design process is a complex logical task. The different complexity of works at the initial and subsequent design stages is justified. The latter leads to the different influence of CAD at these stages. Accordingly, the requirements for the professional qualities of designers and for the organization of the design process change. There is often inconformity with the hardware and software equipment of designers and the tasks of a new product development, which also contributes to the design of the complex in an inhomogeneous environment. CONCLUSIONS. The conducted researches allow to identify the main features of the CAD of a complex on the basis of which to improve the quality and efficiency of complex design. Therefore, the search and identification of such features is of great importance. The results of this work can be used in the development of a specific method of designing the complex.

complex, complex product, connection, computer-aided design system (CAD), basic products, components

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