水下爆炸冲击载荷作用下潜艇冲击环境仿真研究

Research on simulation of underwater shock environment of submarine subjected to underwater explosion impact loads

以某潜艇的基本结构图为基础,建立三维有限元模型,对潜艇结构的冲击环境进行数值实验研究.潜艇的冲击环境是考核潜艇生命力问题的关键.文中利用大型结构分析软件ANSYS/LS-DYNA计算了艇体在不同的炸药当量、不同的起爆位置时的冲击环境,分析了潜艇艇体结构在不同的工况下的冲击响应.通过对潜艇在遭受典型武器攻击后的冲击环境和冲击因子的研究,给出了加速度峰值在潜艇不同部位的分布规律.数据分析表明:潜艇结构的冲击响应峰值在潜艇的不同部位有着不同的趋势,非耐压壳体和耐压壳体之间的各类液舱起到了相当于防爆水舱的作用,使潜艇的冲击环境得到了改善.这对潜艇的抗爆抗冲击性能研究具有一定的参考价值.

A three-dimensional finite element analysis model was established based on the construction profile and deck plans of a submarine. Simulation research on the impact environment of a submarine＇s structure was.performed as a key method for assessing submarine survivability. Calculations were done on the underwater impact environment of a submarine with different TNT masses and detonation positions. Studying the impact environment and impact factor of a submarine subjected to a typical weapon attack, distri- bution regularities of an acceleration peak value on different positions of a submarine＇s structure were given. Analysis shows that the structural impact response peak has different tendencies in different positions of the submarine. All kinds of liquid tanks between nonpressure bulge and the pressure shell of a submarine play an equal role as anti-explosion water tanks, which can improve the submarine＇s impact environment.