Reliability on Underwater Target Structure Subjected to Underwater Explosion

In order to study the reliability of underwater target structure subjected to underwater explosion, reliable sample data were obtained through many groups of experiments.Two methods including the stepwise polynomial regression method and the BP neural network method were presented to fit to these samples, and the approximate analytic expressions were achieved between the structural response variables and the input variables.Then Monte-Carlo method was used to obtain the statistical characteristics and distribution function of the structural response variables, through which the structure reliability could be calculated.Results show that the invalidation probability of target with explosion centre changing can be displayed, and this method provides reference for the defensive structure.