Analysis of the impact of COVID-19 on the coupling of the material flow and capital flow in a closed-loop supply chain

The complex and changeable external social economic environment has a significant impact on the sustainable development of closed-loop supply chain. In particular, occurrence uncertain emergencies increases risk interruption chain, making it insufficient to analyze its changes from perspective material flow alone. Based this analysis, paper constructs chain capital coupling system composed manufacturers, sellers recyclers explore sudden when an emergency occurs. paper, based coupled with logistics flow, dynamics simulation model was established by using Vensim software COVID-19 epidemic under five scenarios. results show that outbreaks occur, each main enterprise in is more easily influenced than flow. At same time, can be found enterprises are constructed applicability used for related studies other emergencies, but scene design should carried out according characteristics themselves.