Research Of The Design Process Of Car Styling And Computer-aided Design System Building

This research focuses on building the duel-phase mode in artistical creation between "semantic extracting" and "feature attaching", which is based on studying on design process and investigating on the artistical property.The research is undertaking in four main contexts.Firstly, under the context of computer algorithm, the scientific or rational property of design is discussed by giving practicality in the engineering cases, then expanding and optimizing the phase mode through analyzing the "design iteration" in practical design cases.Secondly, in the case of the humanity context, the design process is divided into the semantic extracting phase relating to the design concept and the3D modeling phase. The contents of the semantic extracting phase are as follows:building the semantic data base relating on describing design concept, collecting the high-frequency vocabularies through questionnaires aiming at colleges and enterprises, and analyzing the semantic preferences between different roles from various knowledge backgrounds. In the graphic design stage, various types of representative pictures are collected, then, a structured gallery corresponding to high frequency vocabulary are further constructed and designed. In addition, by means of card sorting, this paper explores ways and laws of representations between each graph and semantic and related research has been carries out.Thirdly, in the context of scientific computing, styling design process is transformed into an iterative problem-solving process. Through the concept of characteristic line, qualitative and quantitative researches are conducted on the design parameters of problem domain and solution domain to achieve algorithm solution. By adopting to scoring method of intention scale, the convergence of algorithm solution has been achieved.In the end, after integrating and naturalizing, the design process, under the humanities and sciences context, is abstracted into process model under the engineering management context. The process development technology in software engineering domain, such as artifacts, milestones, use cases, etc, is applied to the remodeling process. Then, reconstructing digital design process according to field studies and surveys. Furthermore, referring to the method in software engineering domain, the process is converted to system structure and module interface in computer-aided design software.The main contributions of my research are in four areas.First of all, in the study of image and semantics of automotive design, the following views were put forward:the conceptual design activity can be concerned as a conversion process which starts from logical thinking based on semantic information processing to an imagine thinking generated from visual thinking. In addition, a practical lightweight automotive computer-aided design tool-Structured Imagery Billboards-is further developed. On this basis, we designed a functional module which can be used to assist in the design process reality on computer platform.Secondly, in the study of automobile design computing, the characteristic lines, feature lines and styling semantics in car styling are selected as the initial conditions for evolutionary design. Then, the studies of the evolutionary experiment and convergent conditions are completed through the setting of the initial population. The following concepts are proposed:visual effectiveness, design optimization, semantic-based fitness, as well as multi-role coordination.Thirdly, through applying the process development technologies into the remodeling process, a developing method for CAD tools on complicated products has been carried out that facing design process and objects. The mentioned process development technologies refer to the contents as followed: artifacts, milestones and use cases etc. in the software engineering domain, for example, R.UP and UML. The prototype system arrange design activities by the methods of imaginary thinking and semantic associated modules, the interaction type presents when semantic and images appear as basic operating objects. Thus, the systems are endowed with the following characters: integrated design process, unambiguous structure logics, and easy-to-use interface operation.