Abstract:

To prevent the impact of external risks on cluster supply chain network, the propagation mechanism of external risks in cluster supply chain network was explored based on cascade failure theory. Feasible strategies to curb the spread of risks in cluster supply chain networks under external risk impacts were also explored through numerical simulation using Python. The results indicate that implementing risk tolerance enhancement strategies in important enterprises cannot prevent the eventual collapse of the network, but can effectively slow down the speed of risk propagation and reduce the impact of each step in the risk propagation process. However, the implementation of risk mitigation strategies by important enterprises can effectively prevent the spread of risks in the network and prevent the collapse of clustered supply chain networks. The implementation of risk tolerance enhancement strategies in the global supply chain can effectively prevent the spread of risks in the network and prevent network collapse. Although establishing a supply chain risk sharing mechanism cannot prevent cluster supply chain network paralysis under deliberate attacks, it can effectively reduce the number of failed nodes under random attacks and prevent cluster supply chain network paralysis.

Key words: external risk, cluster supply chain network, recovery strategy, cascading failure, complex network