基于ANSYS／LS-DYNA模拟水下爆炸冲击波的等效质量法  

Equivalent Mass Method of Underwater Explosion Shock Wave Simulation Based on ANSYS/LS-DYNA

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3期159-162,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：文中针对通用有限元程序ANSYS/LS-DYNA在模拟远场水下爆炸时冲击波强度衰减过快的不足,提出了等效质量法,并利用该方法计算了某圆柱壳结构在远场水下爆炸冲击波作用下的动态响应,计算结果与试验结果吻合较好,从而验证了该方法的有效性。等效质量法可以显著提高ANSYS/LS-DYNA模拟远场水下爆炸冲击波的精度,从而增强了该程序模拟远场水下爆炸的能力。A problem in which the peak pressure and impulse of shock wave induced by far-field underwater explosion are smaller than actual magnitude when FEM program ANSYS/LS-DYNA is used to simulate underwater explosion is in existence. An equivalent mass method has been presented to solve this problem, and the method has been validated that it can greatly increase the ability of ANSYS/LS-DYNA to simulate shock wave induced by far-field underwater explosion.

关 键 词：等效质量法 水下爆炸冲击波 数值模拟 ANSYS/LS-DYNA 

分 类 号：O383.1[理学—流体力学]