Study On The Coordination Of Closed-loop Supply Chain Based On Quality Difference Of Product And The Impact Of Unexpected Incidents

With the continuous reduction of there sources available and the increasingly serious environmental pollution, people will concentrated to the study of closed-loop supply chain increasingly on the basis of the traditional supply chain systems . So the issue of the pricing contract and coordination of the closed-loop supply chain has become a hot research today, and because of unexpected incidents occurring, the closed-loop supply chain will be affected by emergencies. It will have great significance for the entire system to determine the incident's impact on the way the closed-loop supply chain, the results of the impact that may be produced as well as how can the closed-loop supply chain coordinate simply and effectively.There are two different kinds of products in the closed-loop supply chain operation system. Based on this phenomenon, there is quality difference between Remanufacturing product and new product, this will lead to difference market demand. This paper builds a closed-loop supply chain system model which has one manufacturer and retailer. Using game theory to determine the optimal product pricing strategy and system profit respectively in the centralized decision-making way and decentralized decision making way. We can conclude that the optimal product pricing when in the centralized decision-making is lower and the profit of the whole system is higher than in the decentralized decision making. In order to make the whole system have the motive to decide in the centralized way, the margin profit sharing policy is presented to achieve the coordination of the supply chain system. At the same time, under the influence of the unexpected incidents, we will focused on the two aspects which are the influence of product supply and the influence of market demand to analyze the influence of the unexpected incidents and the result of the impact of closed-loop supply chain. Then we make use of the established margin profit sharing policy which we have established before to achieve the coordination of closed-loop supply chain under the influence of the incident. Finally we give a case, using the model we have established to analyze it and using numerical analysis to verify the conclusion.