水下爆炸载荷作用下圆柱壳的局部动响应分析

Analysis on the Local Dynamic Response of Cylindrical Shell Subjected to Under-Water Explosions

以水下爆炸过程中冲击波载荷经验计算公式为参考依据,对水下爆炸的冲击波过程进行分析,采用ABAQUS软件分别利用单双层圆柱壳体结构模型对潜艇的舱段进行模拟,分析了这两种结构在爆炸载荷作用下的异同,得到了单双层壳体受到水下爆炸作用后的壳体肋骨变形示意图。计算结果表明:双层壳结构的抗爆能力大于单层壳结构,非耐压壳抵御了较多的冲击波载荷,使得耐压壳得到了较好的保护。

The empirical formula for blast loading in underwater explosions was used as the input of the ABAQUS software to simulate the dynamic response of the cabin of a submarine subjected to underwater explosions.Both single-and double-deck cylindrical models were used in the simulation,and the deformation of the shell ribs and the structural responses of both models were analyzed.The simulation results indicated that the invulnerability of the double deck is higher than that of the single deck,because the non-pressure shell of the double-deck resists more blasting loading,providing better protection to the pressure shell.