Study of reducing size of cascading failures in scale-free network

In the process of cascading failures in complex network,the main factors are the structure of network,load of nodes,capacity of nodes and strategy of redistribution.Aimed at these factors,a model of cascading failures is presented.In the model,it adopts a new strategy of redistribution,and it can reduce the size of cascading failures about 10%.Enhancing the capability of important nodes can reduce the size of cascading failures effectively.It studies the scale-free network with community structure in cascading failures and finds that this structure makes the size of cascading failures reduce about 30%. These conclusions will be meaningful in reducing the size of cascading failures,designing the network and latter studies.