水下爆炸载荷特性数值计算方法  

Numerical calculation method of underwater blast load characteristics

作　　者：曹晓明 余胜 何红萱 刘加一[2] CAO Xiao-ming;YU Sheng;HE Hong-xuan;LIU Jia-yi(Wuhan Second Ship Design and Research Institute,Wuhan 430064,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430064 [2]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《舰船科学技术》2023年第24期7-13,共7页Ship Science and Technology

基　　金：湖北省技术创新计划项目(2023BIB020)。

摘　　要：为了更好地研究水下爆炸冲击载荷,通过数值模拟的方式模拟水下爆炸过程中产生的爆炸冲击波和气泡脉动2种原生载荷。运用有限元软件AUTODYN建立一维炸药-水域模型模拟炸药爆炸产生的爆炸载荷,通过对比经验公式对有限元模型可靠性进行验证,计算结果与经验公式误差不超过15%。同时研究了爆距、炸药当量和水深等变量对水下爆炸冲击波以及气泡脉动的影响。In order to better study the impact load of underwater explosion,the blast shock wave and bubble pulsation were simulated by numerical simulation.The finite element software AUTODYN was used to establish a one-dimensional explosive-water model to simulate the explosive load generated by explosive explosion.The reliability of the finite element model was verified by comparing the empirical formula,and the error between the calculated results and empirical formula was less than 15%.At the same time,the influence of detonation distance,explosive equivalent and water depth on the shock wave and bubble pulsation of underwater explosion was studied.

关 键 词：水下爆炸冲击波 气泡脉动 冲击波峰值 比冲量 气泡膨胀半径 气泡脉动周期 

分 类 号：U674.703.7[交通运输工程—船舶及航道工程]