Research On Dual-channel Coordination Supply Chain Mechanism By Supernetwork Equilibrium Models Under The Same Retail Price When Demand Disruptions Occur

With the rapid development of China's economy,e-commerce is developing rapidly,and the proportion of online shopping is also increasing.As a result,“new retail” emerged on the basis of the O2 O model.The combination of online and offline channels has also become mainstream,and the traditional supply chain structure has gradually evolved into a dual-channel supply chain structure.Manufacturers and retailers in the dual-channel supply chain have a competing relationship between the upstream and downstream of the supply chain,and there is also a competing relationship between the channels.For example,when online and offline channels compete for markets,they often choose price competition.The stability of the dual-channel supply chain is inherently weaker than that of the supply chain.Therefore,in the event of an emergency,the stability of the dualchannel supply chain is more fragile and more affected.In real life,frequent occurrences of various unstable factors and frequent emergencies have caused disturbances in market demand and production costs.These disturbances affect the interests of various channel members and consumers,but also affect the supply chain.Normal operation is even more demanding on managers.Therefore,in the new retail era,it is increasingly important to study the same-price dual-channel supply chain under emergencies.The research content of this paper is:Firstly,using the super-network model to establish a dual-channel supply chain super-network model without demand disturbance,including multiple manufacturers,multiple retailers,and multiple demand markets,with the goal of maximizing their profit,and then establishing three-tier super-network model to analyze the behavior decisions and objectives of each company.It also uses the variational inequality to find the network equilibrium conditions of the entire system.In the end,the projected gradient algorithm is used to find the equilibrium solution and prepare for the next step.Secondly,on the basis of the first model,a dual-channel supply chain hyper-network model under demand disturbance is established.Due to the disturbance of demand,the company's production or transportation costs will find changes,so there will be a departure from cost.Therefore,as companies seek to maximize their profits,they will also seek to minimize cost deviations.Similarly,using the variational inequality method to obtain the network equilibrium conditions,the projected gradient algorithm is used to find the equilibrium solution.In the numerical case simulation,the equilibrium solution without demand disturbance is obtained in the previous step,and the equilibrium solution can be obtained after the demand disturbance.Comparison between the two solutions can find that the demand disturbance has a certain chopping wave effect,and the online channel is impacted by the demand disturbance.The biggest impact is that the overall profit of the dual-channel supply chain is also decreasing.Finally,the revenue sharing contract is used to coordinate the model,and the hypernetwork model under the revenue-sharing contract is constructed.The goal of minimizing profit maximization and departure cost is to use the variational inequality to characterize the equilibrium condition of the system.And the improved projection gradient algorithm is used to solve the variational inequality.In the end,the effect of the revenue sharing contract on the transaction volume and total profit of each layer is discussed through the results of the numerical projection.The proportion of profit distribution coordinated by the supply chain is achieved.The final result shows that the revenue sharing contract It can coordinate the dual-channel supply chain in the case of disturbances,and the impact of online channels is also mitigated.