The paper deals with the theoretical and experimental investigation of the straight unsteady motion of a slender solid body submerged into the liquid of finite depth below the floating ice plate. The formulae describing the plate deflection with the help of integral and asymptotic methods are numerically analyzed with respect to velocity and submergence depth of the body, and basin depth. The experimental model tests on a submarine (scale of 1:500) moving under a polymeric plate 0.002m thickness in the test basin measuring L B H=2.15 1.2 1.5m are carried out. Good agreement between theoretical and experimental results regarding the values of the plate maximum deflections for various submergence depths, water depth and velocities of the moving body is obtained
The use of submarines in ice conditions may entail the necessity of their surfacing from under the solid ice. At present the technique of surfacing consists in static loading of the ice cover from below due to creation of positive flotage (buoyancy force) by water extraction from the ballasting tanks. The experience of surfacing mentioned above leads to inevitable damages of the cabin, building of upper desk, stern rudders, and the external can. Besides, to break down the ice cover by static loading could result in losing stability, i.e. in overturning of the submarine. The possibility of breaking ice sheets by exciting flexuralgravity waves generated by a submarine moving near the ice-water interface was considered in the paper by Pogorelova and Kozin (2010b) for infinitely deep water. The work by Pogorelova and Kozin (2010a) is devoted to unsteady motion of a point source immersed into the liquid of finite depth below the floating Euler-Bernoulli plate. The aim of this paper is to analyze an influence of water depth on possibility of ice cover destruction by means of moving submarine.
