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  HomeContents of Chinese Journal of Mechanical Engineering (English Edition),2004 Supp.CASE-BASED SIMILAR METHOD FOR CONCEPTUAL DESIGN OF MECHANICAL PRODUCTS

Guan Liwen

 

Wang Liping

Division of Micro/nano Manufacturing

State Key Laboratory of Tribology, Tsinghua University,

Beijing 100084, China

 

Wang Zhixing

School of Mechatronic Engineering, Harbin Institute of Technology,

Harbin 150001, China

 

Ma Qingxin

Qiqihaer Second Machine Tool Group, Qiqihaer 161005, China

 

 

CASE-BASED SIMILAR METHOD

FOR CONCEPTUAL DESIGN

OF MECHANICAL PRODUCTS*

 

Abstract: A case-based similar design method is proposed for design concept generation of mechanical products. At first design requirement model and concept case model are established. Design requirement model is a tree-like data structure with three branches: usage branch, function branch and design restrict branch whose leaves denoting design requirement items. Concept case model is a tree-like data structure with four branches: usage branch, function branch, character branch and structure branch. Concept cases are put into a concept case base. Conceptual design compares design requirement with each concept case in the concept case base. Comparing result is measured by similar degree. Finally concept case is selected according to concept cases sorting result by similar degree. The key problems are discussed such as similar item generation, similar degree calculation, etc.

Key words: Conceptual design  Similar design  Mechanical product

 


* This project is supported by National Natural Science Foundation of China (No.50275084), National High Technology Research and Development Program (863 Program) of China (No.2001AA424011). Selected from Proceedings of the Eleventh World Congress in Mechanism and Machine Science (IFToMM 2004). Received August 24, 2004; received in revised form October 9, 2004; accepted December 20, 2004

 

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