| The damage of framed plate structure subjected to the striking loads and explosions was a very complex process with highly nonlinear character. With the development of the aggressive weapon, the thorough research on this problem was really important. The dynamic responses of warship subjected to non-contact explosions was carried out in this paper with the theoretical analysis method .At last, a systematical numerical simulation study on the dynamic responses of a ship deck in non-contact explosion loadings is performed in this article .The theoretical model of the plastic dynamic response of the panel which subjected to non-contact explosions was set up using the momentum theorem and principle of conservation of energy. The calculation formula of maximum deflection of framed plate structure is found. Theoretical calculated results through an example were compared with the experiment results in the published literature, and they were almost coincided. The analysis was done by the finite element software LS-DYNA, and it was compared with the result of the theoretical computation. It was indicated that numerical simulation could well analyze the plastic dynamic response of the plate which subjected to explosions.The three-dimensional model is set up by using ANSYS, and program LS-DYNA3D is used to calculate. Using ALE algorithm and the JWL state equation for the product of explosion, The model of dynamic responses for ship deck in non-contact explosion loadings have been studied.The propagation rule of explosion wave caused by non-contact TNT explosion loadings on the ship deck is studied by numerical model. The displacement, velocity and acceleration in ship deck are analyzed in non-contact TNT explosion loadings. The distortion rules and the fierce dynamic plastic response rule of framed plate structure in the non-contact explosion loadings are found. The movement rules of Mises stress of non-contact explosion loading are probed in to.
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