膛压作用下舰炮身管固液耦合瞬态响应分析

Transient Response Analysis of Fluid-solid Interaction of Naval Gun Barrel under Bore Pressure

该文分析了含液体冷却层的舰炮身管在膛压作用下的刚强度问题。以瞬态动力学分析和固液耦合理论为基础,考虑液体冷却层与内、外管表面之间的耦合效应,将膛压看作移动的均布载荷,建立了含液体层的某舰炮身管固液耦合瞬态响应数值计算模型;利用ANSYS软件进行了瞬态动力学分析。计算结果说明,液体冷却层可提高身管的刚强度,有效减小弹丸出炮口时的横向振动位移,有利于提高舰炮的射击密集度。

The stiffness and strength of the naval gun barrel with the cooling liquid layer are studied under the bore pressure.Based on the theories of transient dynamical analysis and fluid-solid interaction and taking the bore pressure as the symmetrical distributed moving load,a numerical calculation model of the naval gun barrel with the liquid layer is established in consideration of the fluid-solid interaction between the liquid layer and the inside/outside surface of the tube.The transient dynamical analysis of the model is done by the ANSYS software.The calculation result shows that the cooling liquid layer can raise the stiffness and strength of the barrel,reduce effectively the horizontal vibration displacement of muzzle when projectiles leave the muzzle and increase the fire density of the naval gun.