结构参数变化对双层圆柱壳冲击响应的影响

为了研究潜艇结构在水下爆炸作用下的响应特点和潜艇结构参数变化对其冲击响应的影响,该文在大型有限元计算软件ANSYS/LS-DYNA环境中仿照潜艇结构设计了一个双层圆柱壳体,并对其在相同冲击因子、不同结构参数下的冲击环境进行仿真.以冲击加速度为主要数据,分析了改变内壳板厚、外壳板厚、肋骨尺寸、肋骨间距等结构参数对冲击响应的影响.通过引入各种无量纲化结构参数,得到了双层圆柱壳结构有利于抗冲击的结构参数取值范围,对潜艇抗冲击设计有参考价值.

The effect of changing structure parameter on impulse response of double cylinder shell structure

To help design a submarine that is more shock resistant,a double cylinder shell structure was designed using ANSYS/LS-DYNA software to imitate a submarine structure.A double cylinder shell structure under changing parameters was subjected to simulated underwater explosions and the response characteristics and effects of impulse response were analyzed.Analysis regarded impact acceleration as key data to change structural parameters,such as thickness of external and internal shells,dimensions of rib,and rib intervals.By introducing a different nondimensional structural parameter,the structural parameter range of a double cylinder shell structure that is more shock resistant was achieved.