STUDY ON DEFORMATION AND ENERGY ABSORPTION OF LIQUID CABIN UNDER BALLISTIC IMPACT

摘要

Liquid cabin is the most significance part protecting the ship from damage due to high-speed fragments. In order to guide the design of liquid cabin, response regularity of the impact wave in water and the speed of projectile were studied by simulation method. The deformation and energy conversion of liquid cabin in different design were also investigated. The results show that, the existence of a liquid medium can change the energy absorption model of a cabin. The thickness of water layer put significance influence on the deformation and energy absorption model of liquid cabin. Lower the level of the water lead to the free surface truncation effect of impact wave. The asymmetry and locality of the deformation of bulkhead occur to the free surface truncation effect, but it put little effect on energy absorption of liquid cabin.