摘要
采用ANSYS/LS-DYNA动力分析软件,针对大型航空母舰舰载飞机降落对航母的冲击响应过程及对其内舰载导弹的冲击环境问题进行了数值仿真分析。建立了航空母舰的1:1有限元模型,该模型主要由壳单元和梁单元组成,适用于动力分析计算。研究了飞机在航母甲板上起降对甲板的冲击响应过程,分析了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:飞机降落会对甲板造成较大冲击,使着舰点附近产生较大应力;监测点受到的冲击加速度较大,为了航母及导弹的安全,导弹贮存平台应设置缓冲减振装置;着舰点位置对监测点的冲击环境影响显著,因而导弹贮存平台的布置应尽量远离飞机着舰点;冲击强度从主甲板往下开始衰减迅速,而后衰减渐趋于平缓。
The dynamic response process and the impact environment of big aircraft carrier under im- pact of aircraft landing are investigated with nonlinear finite element software LS-DYNA. The finite ele- ment model of an aircraft carrier with real dimension is built by using ANSYS software. This model is mainly made up of shell and beam element and can be used for dynamic analysis. The acceleration spec- trums of the representative position of guided missile are obtained and the results show that the landing of the aircraft leads to severe impact to the deck, the response acceleration of the nearest position is so great that shock absorbers and buffers should be set up to reduce the impact influence to the missiles. The landing position has significant influence on the impact environment of the gauging point, so important devices should be setup away from the landing position. The impact intensity attenuate fast from the main deck to the second deck.
出处
《现代防御技术》
北大核心
2015年第5期230-235,共6页
Modern Defence Technology
关键词
航空母舰
舰载导弹
舰载飞机
冲击响应
冲击环境
数值仿真
aircraft carrier
shipborne missile
shipborne airplane
impact response
impact environment
numerical simulation
