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.
2020,42(11): 35-39 收稿日期：2019-10-28
DOI：10.3404/j.issn.1672-7649.2020.11.007
分类号：O383
基金项目：国家重大专项
作者简介：谷鸿平(1983-)，男，硕士，高级工程师，从事战斗部与毁伤技术相关数值仿真工作
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