Research On Closed-loop Supply Chain Equilibrium Model Based On Double Channel Remanufacturing

In recent years,the rapid development of global modern industry and science and technology has created tremendous material wealth for mankind,but also greatly affected the ecological environment,excessive consumption of natural resources.Consequently,recycling and remanufacturing of waste products with the idea of protecting the environment and saving resources has become the focus of attention of all sectors of society.At the same time,the rapid development of mobile Internet makes more and more consumers tend to use the network platform to purchase products.Therefore,the dual-channel marketing mode which combines the network channel and the traditional channel is the inevitable way for major enterprises to adapt to the Internet era.This paper comprehensively considers the dual-channel mode and patent authorization mechanism,and studies the network equilibrium of the remanufacturing closed-loop supply chain using the closed-loop supply chain and the variational inequality theory.The main research contents are summarized as follows:(1).The dynamic equilibrium model of closed-loop supply chain is established,in which the manufacturer produces and sells new products and remanufactured products through two channels,and the manufacturer and the third-party recycler recycle them.At the same time,it is assumed that the demand market has seasonal demand for both products.The model mainly studies the optimal transaction strategy of sales and recycling between supply chain node enterprises based on the difference between two products.Then,the optimal behavior of raw material suppliers,manufacturers,retailers,demand markets and recyclers is represented by variational inequality theory.Finally,the above model is solved by the projection dynamic system algorithm,and the effects of price sensitivity and time variation on the transaction volume and demand price of enterprises in the supply chain are analyzed by numerical examples,and the correctness of the model is verified.(2).Based on a market with perfect patent protection system,a closed-loop supply chain model of remanufacturing composed of manufacturer,remanufacturer and consumer is established.This paper studies the equilibrium profit of supply chain system and the decision-making of channel members under two decision-making modes of patent authorization and patent-free authorization.By using the theory of variational inequality,the optimal behavior of manufacturers,remanufacturers and consumers under two decision-making modes of patent licensing and patent-free licensing is depicted,and then the model is solved by projection dynamic system algorithm.Finally,a numerical example is used to analyze the impact of patent mechanism,market size and other parameters on channel enterprise members and supply chain system,and to verify the correctness of the model.