ABSTRACT:

The warship will under attack of missile in sea war and the missile will explosion in ship cabin with great probability. For improving anti-explosive shock ability of ship cabin structure and inner equipment, the FE model of cabin explosion include air was created. Then the shockwave transmission of single cabin explosion was calculated based on fluid-solid couple algorithm. The shock response of cabin was analyzed by comparing equipment base deforming and acceleration. The influence of cabin wall thickness to equipment shock response was evaluated based on calculating results and some conclusions were put forward. These conclusions has some reference value for arranging equipment reasonably in cabin and improving anti-explosion ability of cabin structure.

1 INTRODUCTION

In modern sea war, the ship would face battle anytime. The precision guided weapon usually form non-contact explosion in the ship cabin which could damage ship structure and equipment. Containing ship fighting capacity is very important when ship didn't sink. So it is important to analyzing ship structure shock damage. For calculating real shock response of ship equipment, it is necessary to simulate real explosion environment as much as possible. The methods of anti-explosive research are experiment, theoretical analysis and numerical calculation. The explosive experiment is most effective and directly method for test equipment anti-explosive performance. But explosive experiment cost is huge and unacceptable. In explosive condition, the cabin structure would acted by high non-linear load constitute with large aperiodicity load and plastic strain material which make precise response hardly be get by theoretical method. So the numerical calculating method is used widely for explosive shock analysis.

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