冰碰载荷下船用泡沫铝夹层板冲击动力响应研究

Through ANSYS/LS-DYNA finite element software, the dynamic impact numerical simulation model of marine foam aluminum sandwich plate under wedge-shaped ice collision load was established, and the hull plate-ice collision experiment was carried out to verify the ice material model and study the dynamic impact response of foam aluminum sandwich plate. On this basis, the differences of dynamic impact response to foam aluminum sandwich plate under ice body impact and rigid body impact were compared and analyzed. The results show that the deformation modes of the upper panel of the foam aluminum sandwich plate are obviously different under the conditions of ice body impact and rigid body impact. Compared with rigid body impact, ice body impact on foam aluminum sandwich plate will lead to energy dissipation due to ice body breakage, thus making the foam aluminum sandwich plate absorb energy and produce lower plastic deformation than the former. Finally, the influence of ice collision speed and core thickness on the dynamic impact response of foam aluminum sandwich plate was studied.