水下爆炸时舰船冲击环境与冲击因子的关系  

The relation of impulsive environment and impulsive factor on underwater explosion of ship

作　　者：姚熊亮[1] 许维军[1] 梁德利 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2004年第1期6-12,共7页Journal of Harbin Engineering University

摘　　要：对舰船在遭受典型武器命中后的冲击环境及冲击因子的研究,是考核舰船生命力问题的重要组成部分.为了提高舰船的抗冲击性能,结合大型有限元动力分析软件LS-DYNA对某型舰进行了数值仿真实验研究,计算了典型武器的攻击对全船的加速度的响应,并给出了冲击响应(加速度)的统计规律以及对冲击因子进行了分析.数据分析表明:冲击响应(加速度)峰值基本上符合Weibull分布,并且炸药当量的变化以及爆炸位置的不同对冲击响应会产生不同的影响.这对于整个舰船的生命力研究有着重要的意义.The response of an underwater structure under the pressure of a shock wave is a mechanical problem that must be considered during engineering design of ships to achieve anti-shock design of structures.Moreover,it is an important component to a ship's service life that the research of impulsive environment and impulsive factor be subjected to explosive/impact loading.By using finite element analysis software ANSYS/LS-DYNA,the FEM is established based on the structure and form lines of a ship,the effects of an underwater explosion on a ship are discussed and numerical simulation is done.The response of acceleration on an entire ship subjected to explosive/impact loading is calculated and the statistical law of acceleration is given.In addition,the impulsive factor is also analyzed.The results show that the calculation of underwater explosion environment by ANSYS/LS-DYNA FEM program is reliable.The conclusions of the structure of a ship subjected to explosive/impact loading here are important reference to the research of a ship's service life.The main conclusions are:(1)the response of acceleration on a ship accords with Weibull distribution;(2)the response of acceleration varies from the difference of TNT masses and detonation positions.

关 键 词：舰船 水下爆炸 冲击环境 数值仿真 冲击因子 生命力问题 

分 类 号：U661.73[交通运输工程—船舶及航道工程] U674.701[交通运输工程—船舶与海洋工程]