Liu Fuyun  Yang Qinghai  Qi Guoning

(Institute of Contemporary Manufacturing Engineering, Zhejiang University, Hangzhou 310027)

Huang Zheren

(Hangzhou Steam Turbine Co. Ltd., Hangzhou 310022)

Abstract: Main structure of product family can be depicted as a directed complex network, nodes of the network are parts of product family and edges of the network are hierarchical relations of the parts. Parameters of the networks such as betweenness, total number, usage times, in-degree and out-degree of each node are calculated through simple path detecting algorithm, bi-logarithmic coordinates statistical curves of the parameters are drawn, these distribution curves follow a power law as a whole and it demonstrates that the parts network is scale-free. An experiential formula for universality of parts is given, the universality of each part is accounted, universal and customized parts are derived. As an example, a product family of the industry steam turbine is analyzed with this algorithm and some useful results are obtained.

Key words: Mass customization  Complex network  Product family  Universality analysis

CLC No: TP14  N94  O173

国家自然科学基金(60374057)和211“十五”建设项目(“十五”211CERS-12)资助项目. Received 20050118, received in revised form 20050331