| With the development of economy and the progress of society,the indiscriminate disposal and accumulation of waste products have caused great waste and damage to the environment and resources,the deterioration of the ecological environment and the shortage of resources has Caused our country government and the related department to take seriously.Closed-loop supply chain(CLSC)is an important way to realize the development of green economy and low-carbon cycle by recycling and remanufacturing waste products.In the study of dynamic optimization of closed-loop supply chain,member competition behavior and product goodwill play an important role in member decision-making.Therefore,under the assumption that the marginal profit fluctuates at any time,this thesis considers the dynamic change of product goodwill,on the basis of this,the thesis further studies the effects of competition among members in the closed-loop supply chain,such as,manufacturer competition,retailer competition and recycling competition,on the optimal decision-making and performance of members in the closed-loop supply chain.Based on the closed-loop supply chain model,this thesis constructs the dynamic change differential equation of product goodwill,and establishes the functional relationship between product goodwill and product demand and recovery,this paper studies the operation models of closed-loop supply chain with manufacturer competition,retailer competition and recycling competition by using differential game theory,the optimal decision path of members in closed-loop supply chain with Stackelberg game and cooperative game is solved by using differential game theory.By comparing and analyzing the optimal decision-making path of supply chain members in different markets,this thesis studies the influence of competition on the decision-making and performance of supply chain members.The main conclusions are as follows:Conclusion(1): In the competitive market of manufacturers,the wholesale price and the retail price of products will be influenced not only by their own goodwill,but also by the goodwill of competing products,both have a positive effect on the wholesale and retail prices of the products.That is,the greater the goodwill of the products themselves,the greater the goodwill of the competing products,the higher the wholesale and retail prices of the products.The manufacturer competition will lead to the increase of the wholesale price and the retail price of the competing products,and will also increase the profit of the supply chain members.The greater the price competition,the greater the goodwill of the products,the higher the wholesale and retail prices of the products,and the greater the profit of the supply chain members.Conclusion(2): In the market of retailer competition,the price competition among retailers is helpful to improve the goodwill of products and the recovery rate.And the more intense the competition among retailers,the higher the product recovery rate and goodwill.As the goodwill of products increases,the wholesale and retail prices of products will also increase,and the profits of members in the supply chain will also increase.It is found that the cost-sharing contract does not affect the level of manufacturer’s advertising investment,but it can improve the level of retailer’s advertising investment in non-cooperative game,thus,the product goodwill and the retailer’s recovery rate increase,which is conducive to improving the profits of members in the supply chain.Conclusion(3): In the Competitive Market of recycling,the wholesale price of the manufacturer and the wholesale price of the retailer are in direct proportion to the goodwill of the product.Similarly,the profit of the manufacturer and the retailer is also in direct proportion to the goodwill of the product,the higher the wholesale and retail prices of products,the greater the profits for manufacturers and retailers.But the recovery price of the manufacturer and retailer is inversely proportional to the goodwill of the product,that is,the bigger the goodwill of the product,the smaller the recovery price of the manufacturer and retailer.The higher the competition intensity of recycling,the smaller the wholesale price and retail price,and the smaller the recycling price.Compared with non-recycling competition,recycling competition has a negative impact on the establishment of product goodwill,which makes the product goodwill decrease,and then the profits of supply chain members are also decreasing.And the stronger the price competition,the smaller the goodwill of the product,the smaller the profit of the supply chain members.The research of this thesis expands the research depth and breadth of closed-loop supply chain management to a certain extent,and reveals the internal law and evolution mechanism of dynamic optimization of closed-loop supply chain with stochastic marginal profit,it is significant to perfect and enrich the theory and method of closed-loop supply chain management.The study is in line with the theme of current development,and more in line with the actual conditions,helps to guide and encourage enterprises to implement closed-loop supply chain management,and has a practical guiding significance for forming the mode of production of green development,it provides a scientific basis for the members of closed-loop supply chain to adapt to different market types,and also provides a theoretical basis for enterprises to determine the optimal decision. |
