Research on Damage Evaluation of Ship Structure in Underwater Non-contact Explosion

摘要

Due to the complexity of underwater explosions and ship structure dynamic response, the research of ship structure damage mostly came from experiment phenomenon or the analysis of experiment data when ship was subjected underwater non-contact explosions. Underwater shock wave and second pressure wave were mostly considered on the theory analysis and calculation of tradition ship structure damage research Recent years, though some people discovers that gas bubble-pulse impacts to ship structure, there is no specific connection between gas bubble-pulse and ship structure damage. Based on the model of ship structure damage in underwater non-contact explosions, the paper builds damage grade of ship structure and makes sure the assessment standard of damage grade At last, take example and compare the result of assessment and the result of computer simulation when ship was subjected to underwater non-contact explosions, then the result is basically unanimous.