水下定向冲击波对圆柱壳体破坏的仿真研究  

Research of Simulation for Damage of Cylindrical Shell by Underwater Directional Shock Wave

作　　者：王振宇[1,2] 刘平香[3] 盖京波[2] 王善[2] 

机构地区：[1]杭州电子科技大学机械工程学院,杭州310018 [2]哈尔滨工程大学建筑工程学院,哈尔滨150001 [3]上海船舶电子设备研究所,上海201108

出　　处：《系统仿真学报》2009年第15期4854-4858,共5页Journal of System Simulation

基　　金：<水下冲击波毁伤鱼雷机理理论研究>:哈船科KY字(2007)034;国家自然科学基金(10872062)

摘　　要：水声对抗领域基于定向声能技术的对抗武器,利用具有强大能量的冲击波正面摧毁鱼雷,实现舰体的防护。将水声学中的分贝概念转换为冲击波的峰值压力,并利用爆炸冲击波的衰减公式,采用有限元软件LS-DYNA中的ALE算法进行数值仿真计算。得出结论:当声源级达到280dB时,直径324mm的圆柱壳体开始出现破坏变形。为水下定向声能对鱼雷硬杀伤提供理论依据。Based on the directional acoustic sound energy technologies, the warfare weapons of the acoustic warfare field, using the strong energy shock wave front to destroy the torpedo were realized to protect the ships. The decibel in acoustic was transformed into the peak pressure of shock wave. And using the weaken formula of explosive shock wave, ALE algorithm in finite element software LS-D YNA was adopted to carry out numerical simulating. The conclusion was gotten： when the sound source level reached 280 dB, 324 mm diameter cylindrical shell began to undermine deformation. A theoretical basis can be provided for the underwater directional acoustic sound energy to the anti-torpedo hardware.

关 键 词：水下定向声能 冲击波 LS-DYNA 圆柱壳体 数值仿真 

分 类 号：TB56[交通运输工程—水声工程] TD235[理学—物理]