水下爆炸冲击波毁伤鱼雷壳体结构的数值仿真研究  

The Numerical Simulation Study of Damage Effect of Near-field Underwater Explosion on Torpedo Shell Structure

作　　者：贾宪振[1] 胡毅亭[1] 董明荣[2] 许学忠[2] 刘家骢[1] 

机构地区：[1]南京理工大学化工学院,南京210094 [2]西北核技术研究所,西安710024

出　　处：《弹箭与制导学报》2008年第4期127-130,134,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：运用ANSYS/LS-DYNA程序对鱼雷壳体结构在近场水下爆炸冲击波作用下的毁伤过程进行了数值仿真,研究了鱼雷壳体的毁伤规律,分析了鱼雷内部构件的存在对于鱼雷壳体毁伤的影响,研究了鱼雷不同舱室壳体的易损性。仿真结果表明:在近场水下爆炸冲击波作用下,鱼雷壳体的毁伤具有局部性特点;内部构件对于鱼雷壳体的动态响应有显著影响,在仿真时必须考虑内部构件;鱼雷不同舱室壳体的易损性有较大差别,对于文中的鱼雷而言,在同样的冲击载荷作用下,鱼雷控制舱壳体的塑性变形较大,而后舱壳体更易产生等效应变。The damage mechanism of a lightweight torpedo shell subjected to near-field underwater explosion was simula- ted by using FEM program ANSYS/LS-DYNA. The damage of the torpedo shell was studied from the viewpoint of equivalent strain and plastic deformation. The calculation result indicates that the damage of the torpedo shell distributes locally, and the damage of different cabin shell is different under the same shock environment; the inside of torpedo influences the dynamic response of torpedo shell greatly, and the vulnerability of different torpedo cabin shell is variable.

关 键 词：爆炸力学 毁伤鱼雷 数值仿真 水下爆炸 易损性 

分 类 号：O383[理学—流体力学] TJ63[理学—力学]