Designing a resilient wholesaler supply chain for agri-food products under supply and demand disruption
Agri-food supply chain with wholesale market as the core is the main circulation channel of agricultural products,which plays an important role in ensuring urban supply and maintaining agri-food supply.Some wholesale market closure and supply disruptions have se-riously affected the normal operation of wholesalers.How to design the most profitable supply chain against supply chain disruption risks is getting more attention.However,there are few researches based on the agri-food wholesale market,and the research about the general supply chain design is difficult to reflect the purchasing characteristics of wholesalers and disruption risks.This paper speculates there are some strategies that can be used to mitigate the disruption risks,namely multiple-sourcing,backup supplier,supplier reinforcement,and backup demand,which are suitable for characteristics of wholesalers and designs a resilient wholesaler supply chain network model which considers demand and supply disruption,product sorting,discount pricing and perishability.The model designs the most profitable network to determine the selection of suppliers,DCs and the order allocation.In order to solve the problem,the piecewise model is transformed into a mixed-integer programming model through two steps.And then,typical disruption scenarios are obtained by Monte Carlo sampling and k-medoids clustering.Finally,we make a sensitivity analysis on the design of agri-food supply chain under different pricing schemes,different demand changes,different resilient strategies,different facility disruption and different disruption intensity,which can provide managerial insights for similar business pattern of wholesalers.
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