关键词: 复杂产品, 结构网络, BBV模型, 设计变更评估

Abstract: The complex network theory was applied to complex product modeling.The parts were defined as the vertices and the physical connections among parts were defined as the edges to set the pre-defined function load as the edge weight,by which the weighted-directed complex network model of complex product was constructed.The degree and degree distribution were statistically analyzed to clarify the type of network.The indices system included part feature,network topological feature and change impact feature to evaluate the part importance was established,and the fuzzy evaluation model based on entropy weight was employed to evaluate the part importance.The kernel parts were selected as the alternatives to be changed to quantitatively assess the design change propagation impact of complex product by using BBV evolution model for scale-free network.The design change propagation impact assessment of a certain crawler crane variant was established to elaborate the feasibility and effectiveness of the proposed approach.

Key words: complex product, structure network, BBV model, design change assessment