舰载导弹在水下爆炸作用下的冲击环境数值仿真  

Numerical simulation on dynamic response of aircraft carrier subjected to underwater blast landing

作　　者：谷鸿平[1] 黄河 孟献策 张立建[1] 畅博[1] 吕永柱[1] 张舵[2] GU Hong-ping;HUANG He;MENG Xian-ce;ZHANG Li-jian;CHANG Bo;LU Yong-zhu;ZHANG Duo(Xi'an Modern Chemistry Research Institute,Xi'an 710065,China;College of Liberal Arts and Sciences,National University of Defense Technology,Changsha 410073,China;Project Management Center of Rocket Army Equipment Department,Beijing 100085,China)

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]国防科技大学文理学院,湖南长沙410073 [3]火箭军装备部装备项目管理中心,北京100085

出　　处：《舰船科学技术》2020年第11期35-39,共5页Ship Science and Technology

基　　金：国家重大专项。

摘　　要：采用Ansys/Ls-dyna动力分析软件,针对水下爆炸对大型航空母舰的冲击响应过程及对其内舰载导弹的冲击环境问题进行数值模拟。引入冲击环境谱分析研究方法,建立航母的1∶1尺寸有限元模型以适用于冲击动力响应分析;研究水下爆炸对航母结构的冲击响应过程,分析航母导弹贮存典型位置处的冲击环境并给出了加速度谱。结果表明:水下爆炸会对航母结构造成较大冲击,舰体中间位置底部冲击响应最明显,航母整体结构表现出鞭状运动响应的特征;典型舰载导弹贮存位置处的冲击谱值较大,为了导弹的贮存安全,导弹装载平台应设置缓冲减振装置;冲击强度从底板往上开始衰减迅速,而后衰减渐趋于平缓。Numerical simulation of the dynamic response process and the impact environment of shipborne missile of big aircraft carrier subjected to underwater blast landing are investigated with Ansys/Ls-dyna. The shock spectrum method is introduced and the finite element model of an aircraft carrier with real dimension is built for the analysis of dynamic response. The impact response of underwater explosion on aircraft carrier structure is studied. The impact environment of typical carrier missile storage location is analyzed and the acceleration spectrums are given. The results show that the underwater explosion will cause great impact on the aircraft carrier structure, the impact response of the bottom of the middle position is the most obvious, and the overall structure shows the characteristics of whip motion response. The shock spectrum value at the typical carrier missile storage location is relatively large. For the sake of the missile storage safety, the missile loading platform should be equipped with a shock absorber. The impact strength decay rapidly from the bottom at first and then gradually flatten out.

关 键 词：舰载导弹 水下爆炸 数值模拟 冲击环境 冲击谱 

分 类 号：O383[理学—流体力学]