Designers often have difficulties in fulfilling rapid conceptual design for complex products or system due to the lack of sufficient multi-disciplinary well-structured and well-evolved knowledge. Therefore, this paper presents a knowledge-based multi-disciplinary system for the conceptual design by reusing the knowledge and synthesizing the evolutionary design methodology (EDM). With the system, the designers can easily search the existing design data and successful cases for reusing or

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... the functions and parameters for the design to meet requirements. Index Terms-Conceptual design, evolutionary design methodology, knowledge-based. multi-disciplinary system, reuse.