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Evolving product form designs using parametric shape grammars integrated with genetic programming

Published online by Cambridge University Press:  13 November 2008

Ho Cheong Lee  and
Ming Xi Tang
Ho Cheong Lee
Affiliation:
Design Technology Research Centre, School of Design, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
Ming Xi Tang
Affiliation:
Design Technology Research Centre, School of Design, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
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Abstract

The two critical issues related to product design exploration are addressed: the balance between stylistic consistency and innovation, and the control of design process under a great diversity of requirements. To address these two issues, the view of understanding product design exploration is first sought. In this view, the exploration of designs is not only categorized as a problem-solving activity but also as a problem-finding activity. A computational framework is developed based on this view, and it encompasses the belief that these two activities go hand in hand to accomplish the design tasks in an interactive design environment. The framework adopts an integration approach of two key computational techniques, shape grammars and evolutionary computing, for addressing the above two critical issues. For the issues of stylistic consistency, this paper focuses on the computational techniques in balancing the conflicts of stylistic consistency and innovation with shape grammars. For the issues of controlling design process, the practical concerns of monitoring the design process through various activities starting from the preparation works to the implementation of shape grammars have been emphasized in the development of this framework. To evaluate the effectiveness of the framework, the experiments have been set up to reflect the practical situations with which the designers have to deal. The system generates a number of models from scratch with numerical analysis that can be evaluated effectively by the designers. This reduces the designers' time and allows the designers to concentrate their efforts on performing higher level of design activities such as evaluation of designs and making design decisions.

Keywords

Configuration DesignsEvolutionary Shape GrammarsGenetic ProgrammingInteractive Grammar-Based Design SystemsProduct Designs
Type
Research Article
Information
AI EDAM , Volume 23 , Issue 2 , May 2009 , pp. 131 - 158
Copyright
Copyright © Cambridge University Press 2008

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