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Date of Publication:2022-10-10

Journal:振动与冲击

Issue:23

Page Number:50-56

ISSN No.:1000-3835

Abstract:Here, a procedure combining the finite element method with doubly asymptotic approximation(DAA) method was developed to study the problem of transient responses of a full-scale surface ship model subjected to an underwater explosion bubble. The theory of interaction between a gas bubble and a ship hull structure was presented. A bubble model considering bubble migration, free surface effect and drag force and a surface ship hull model were established. The global and local responses of the ship model were studied. Its acceleration, velocity and displacement time histories were obtained. The characteristics of both the global and local responses of the ship model subjected to an underwater explosion bubble were discussed in detail.

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