Research On The Robustness Of Complex Networks Based On Cascading Failure

With further research on complex networks,the key significance of robustness to networks has been gradually discovered.In this paper,the main research from the perspective of cascading failure is as follows:(1)In this paper,we present a cascading failure model based on coupled map lattices(CML)under sustained attack.The individual important node picked in the network to attack at each time step and compare the effectiveness of four attack strategies.The experimental results show that high-degree strategy outperforms the other attack strategies when the strength of external attacks is low.Increasing the value of the rewiring probability can make the network more robust against sustained attacks;a more compact network structure and a smaller coupling strength can effectively suppress the spreading rate of cascading failure.(2)In this paper,the attack strategy extended from single-node strategy(ONS)to twonode strategy(TNS)based on WS small-world network,and compare the performance of ONS and TNS under different strength external perturbations.We find that ONS performs better than TNS for lower external perturbations;however,when both the strength and time step of the external perturbations are large,TNS may be a better strategy.(3)In this paper,we construct an air-air cooperative confrontation model based on random spatial network for multiple UAV swarm from red and blue sides,where the red is the airspace defense side and the blue is the cooperative reconnaissance side.According to the simulation scenario,we set the amount of data detected by the UAVs for the initial execution of the task,the hit rate of both sides,and introducing the data capacity cap parameter to trigger the cascading failure of the blue UAV network after the confrontation.The results show that when the hit rate of red UAVs is different,the higher the hit rate is,the higher the number of blue UAVs is shot down and the stronger the cascading failure effect caused subsequently,and less data will be safely brought back to the base;when the blue UAVs have different data capacity caps,the larger the capacity caps,the weaker the cascading failure effect,and more data will be brought back safely to the base.