Research On Cooperation Relationship Between Supply Chain Partners Based On Complex Network Structure

With the deepening of global integration, supply chain management faced problems become more and more complex, the internal and external environment of the supply chain enterprises become more complex, which requires the supply chain managers to apply new theories and methods to examine the problems of supply chain and research the supply chain management in a complex situation. The supply chain is in the competition, cooperation, complexity and dynamically changing market environment, it's a dynamic supply and demand networks by raw material suppliers, manufacturers, distributors, retailers, end customers constitute and quickly respond to the changing market environment, it's a typical complex system. It's complexity not only represent as the complexity of the supply chain entities, the complexity of the supply chain link structure, the complexity of the various aspects interactions between the supply chain, the openness of the supply chain, the emergence of the supply chain and other aspects, more importantly, it's complexity represent as the constituent entities in the supply chain and constitute a complex interplay between the entity with which the supply chain environment, and the resulting complex dynamic behavior of the supply chain system.This paper is the supply chain management needs in the context of globalization as the background, in the complex network perspective, the supply chain is abstracted as a complex network, the single enterprise is the node, the relationship between enterprises is the side, and as a research object, based on the absorb and draw lessons from the domestic and foreign research, analysis and modeling the following questions:complex network structural characteristics of the supply chain network, the evolution model of supply chain network, the identification method of the core enterprise on the complex supply chain network structure, the cooperation between supply chain network enterprises on the complex network structure. Summary this paper work, the main research work have the following aspects:1. Proposed the definition of supply chain network and measure properties based on the complex network perspective, defined the robustness indicators of supply chain network on the complex network structure and the quantitative analysis was conducted, combined with an enterprise supply chain network to an empirical analysis in the last. In Reality, the complexity of the supply and demand relationship between the inter-enterprise determine the supply chain network has the structural complexity characteristics, this study has important practical significance for indicate the complexity of the supply chain network.2. Combined with the non-uniformity growth characteristics of the supply chain network growth, respectively select the choice behavior of the individual enterprise and transaction costs between enterprises as the driver factors of network growth, two supply chain network evolution model was established, and the theoretical analysis and simulation was carried on, the results show that the supply chain networks has scale-free network characteristics in both cases, this has important practical significance for the supply chain management and optimization.3. Established the core enterprise identification method and key link assess method of the supply chain network. The network structure characteristics and node characteristics (node degree and the aggregation degree, etc.) were take into account in the core enterprise identification method, the transaction costs, time costs, transaction volume and other factors were take into account in the key link assess method, these two methods were more consistent with the actual situation. The dynamic robustness was analysed on the complex supply chain network structure, and the supply chain network optimization strategies and methods was given on the complex network characteristics.4. According to the classification of the supply chain network enterprises, combined with the logistic growth principle and the Lotka-Voterra competitive principle, established the cooperation evolution model of the peer companies and the cooperation evolution model of the non-peer-oriented companies respectively, and the simulation analysis was carried on, determined the condition of the cooperation keep e quilibrium.5. Established the dynamic equilibrium cooperation model between the supply chain business on the complex network structure, and the simulation analysis was conducted in different game strategy on the scale-free characteristics of supply chain network. The results show that the high initial cooperation degree can lead to long-term stable cooperation status in the best-takes-over and the tit for tat game rules on the scale-free supply chain network structure.This research helps to reduce the supply chain network operating costs, improve the network efficiency and the competitiveness of the single enterprise node, and provide the new ways and means for the supply chain macro management, and have the guiding significance and practical value in terms of create a favorable cooperation environment and improve enterprise competitive behavior.