Research on the cascading failure of scale-free networks based-on the coupling coefficient

The paper researches the issues of cascading failure when scale-free networks based-on the coupling coefficient experience the random attacks and intentional attacks. Based on the Node Dynamic Model, follow the principle of that the load on the collapse nodes must be re-distributing locally and preferred, compared the global cascading failure phenomenon under the two attack strategies of the extended scale-free network relative to the typical model of scale-free networks, and explored the effectiveness of the two different attack strategies. Numerical simulation indicating that when the adjustable parameters between a certain value in this model, the attack on the smallest node in the network moderate than the largest node in the network attacks to more easily lead to cascading failure, the extended network has been more robust.