本文建立了一个综合考虑了真实质量分布、刚度分布和材料模型的Boeing767-200ER模型,利用LS-DYNA程序对其撞击刚性墙进行数值模拟,获得了飞机撞击荷载时程曲线,并分析了不同初始速度及内部结构对飞机撞击力的影响;将该飞机有限元模型用于撞击核电站屏蔽厂房的数值模拟中,分析了靶体形状及相对刚度对飞机撞击力的影响,为飞机撞击核电站问题的深入研究奠定了基础。
Abstract
In this paper, a refined finite element model of Boeing767-200ER is developed, considering actual mass distribution, structural stiffness, and material properties. The rigid wall aircraft impact simulations are performed by LS-DYNA program, to obtain the impact and impulse time histories, and analyze the effect of different initial velocities and airframes. Then the analysis of the aircraft impact on the concrete containment building shows that, the impact force and impulse by the aircraft are influenced according to the sectional shape and relative stiffness of the target. The analyses are necessary for further research on aircraft impact threats to NPP.
关键词
核电站厂房 /
飞机撞击 /
数值模拟
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Key words
NPP /
aircraft impact /
numerical simulation
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参考文献
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脚注
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