Research on Evolving Rule of Parts Relation Network for Product Family

Applying complex network theory to the parts relation of product family, the parts relation network of product family was built, in-degree and out-degree bi-logarithmic coordinate distribution curves of all nodes of the network are drawn. The evolving rule of the network was presented, kinetic equation of both in- degree and out-degree were built and analytical result of in-degree´s probability density distribution function is derived. The reason why the out-degree distribution curve deflecting from a power law was analyzed, the evolving rule of out-degree was simulated through numerical method, and the numerical simulation result is obtained.