Dynamic Response of Submerged Structures to Bubble Impact Loading

This paper presents a study on dynamic response of a submerged structure to impact loading induced by an underwater explosion bubble. The structure response to the bubble impact loading is simulated by a coupled boundary element method (BEM) with finite element method (FEM). The BEM is used to simulate the physical process of the explosive bubble growth, contraction and collapse, while the FEM is used to simulate the submerged structure response to the impact loading induced by the underwater explosion bubble. The benchmark tests are conducted, showing the capability of the simulation method. The effects of different charge locations on both structural responses and bubble deformations are examined. From the results obtained, some insights to the problem of submerged structures subjected to impact loading induced by underwater explosion bubbles are deduced.