Abstract: Studying the impact of cascading failures of complex networks on the dynamic behavior of the network has a high application value for maintaining network security and ensuring network stability.From the perspective of network cascading,the problem of system traffic change in the totally asymmetric simple exclusion process model is analyzed.Therefore,this paper uses a network model based on a completely asymmetric simple exclusion process for cascading failure research.The size of the largest strongly connected subgraph,the number of strongly connected subgraphs,and the current of network are compared.It is shown that the size of the largest strongly connected subgraph is positively correlated with the current.And the minimum threshold of network current is determined by the number of strongly connected subgraphs of the network.Then,the simulation experiments are carried out in different average networks,which shown that with the increase of the edge removal rate,the greater the average degree of network is,the lower the rate of network traffic decline is.Finally,the different particle densities are taken.The simulation experiments on network show that the change of average density has little effect on the rate of flow decline at low density and high density,and the decline rate of current is almost constant in the intermediate density interval.

Key words: Cascade failure, Complex network, Current of network, Dynamic behavior, Totally asymmetric simple exclusion process