Analysis of Safety Accident Influence Factors of Complex System Based on the Integration of DEMATEL and ISM

The complex non-linear interactive action between causation factors is the main cause of the causation complexity of complex system safety accident.After distilling the causation factors of complex system safety accident,offered the arithmetic steps of integration of DEMATEL and ISM.Based on the example of aviation complex system,used the integration of DEMATEL and ISM method gained the compositive influence relationship between causation factors,key causation factors and multi-level step-up structural model,analyzed the degree of node by complex network theory,and the high degree node matched well with the key causation factors.The proposed method can be used to find the accident key causation factors and analysis the hiberarchy of causation factors.