Basic Structures Library Design For Automotive Interiors Based On The Knowledge Rules

Automotive interiors design is a very important factor of the whole vehicle design. However, there are a large number of same or similar structures on B surface of interiors in the design and development process of automotive interiors. When designing these basic structures in the design process of auto interiors, the products can't meet the manufacturing process often happen because designers usually copy structures from finished parts to designing parts and the designers' lack of experience or negligence. In addition, designers also redesign similar structures because the structures have different dimensions. The work efficiency is reduced by those repeated work, and it is difficult to ensure the quality of the products.To solve these problems, the basic structures on B surface of interiors are studied. The extraction rules are established in this progress and these basic structures are extracted according to the grouping extraction method. In order to manage the basic structures library efficiently, shorten the search time and provide the basis for the establishment of the parametric model template files, the structures can be classified into three classes according to their functions: mounting structures, fastening structures and auxiliary structures. The standardization work on basic structures is completed.After the work of basic structures extraction, the basic structure's parameters are studied and classified into four categories. The general modeling methods for creating are introduced. Some special modeling methods which are suit for the basic structures parametric model are also discussed in detail. The solutions to frequently encountered management problems of establishing basic structures model are given.The knowledge rules are established according to the literature method, the finite element analysis method, discussing with experienced design staff method and measuring size of the finished basic structures. Some basic structures' knowledge rules are given. The way how to realize the knowledge rules is elaborated.The basic structures library is realized by using the Microsoft Visual Studio C++ programming tools, UG Secondary Development module and the Microsoft Excel database. The interfaces and the functions of the basic structures library are introduced in detail. With The design of door trim structures, the successful application of the structures library in the design process of auto interiors was illustrated.This paper aims to solve the problems that are produced when designing the basic structures on the B surface of the interiors and build basic structures library for automotive interiors based on knowledge rules. At the same time, this paper gives a way to establish basic structures library which on the parts.