Abstract: This study addresses the numerical simulation of the shield building of an AP1000 nuclear power plant (NPP) subjected to a massive commercial aircraft impact. First, a simplified finite element model (F.E. model) of the large commercial Boeing 737 MAX 8 aircraft is established. The F.E. model of the AP1000 shield building is constructed, which is a reasonably simplified reinforced concrete structure. The effectiveness of both F.E. models is verified by the classical Riera method and the impact test of a 1/7.5 scaled GE-J79 engine model. Then, based on the verified F.E. models, the entire impact process of the aircraft on the shield building is simulated by the missile-target interaction method (coupled method) and by the ANSYS/LS-DYNA software, which is at different initial impact velocities and impact heights. Finally, the laws and characteristics of the aircraft impact force, residual velocity, kinetic energy, concrete damage, axial reinforcement stress, and perforated size are analyzed in detail. The results show that all of them increase with the addition to the initial impact velocity. The first four are not very sensitive to the impact height. The engine impact mainly contributes to the peak impact force, and the peak impact force is six times higher than that in the first stage. With increasing initial impact velocity, the maximum aircraft impact force rises linearly. The range of the tension and pressure of the reinforcement axial stress changes with the impact height. The perforated size increases with increasing impact height. The radial perforation area is almost insensitive to the initial impact velocity and impact height. The research of this study can provide help for engineers in designing AP1000 shield buildings.

中文翻译：

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AP1000盾构建筑受大型商用飞机冲击效应研究

摘要：本研究针对遭受大规模商用飞机撞击的 AP1000 核电站 (NPP) 的盾构建筑进行数值模拟。首先，建立了大型商用波音737 MAX 8飞机的简化有限元模型（FE模型）。构建AP1000盾构建筑有限元模型，为合理简化的钢筋混凝土结构。两种有限元模型的有效性都通过经典的 Riera 方法和 1/7.5 比例的 GE-J79 发动机模型的冲击试验得到验证。然后，基于经过验证的有限元模型，利用导弹-目标相互作用法（耦合法）和ANSYS/LS-DYNA软件对飞机在不同初始撞击速度下对盾构建筑的整个撞击过程进行模拟。和冲击高度。最后，详细分析了飞机撞击力、残余速度、动能、混凝土破坏、轴向钢筋应力、穿孔尺寸等规律和特性。结果表明，它们都随着初始冲击速度的增加而增加。前四个对撞击高度不是很敏感。发动机冲击主要促成峰值冲击力，峰值冲击力比第一阶段高6倍。随着初始撞击速度的增加，最大飞机撞击力线性上升。钢筋轴向应力的拉压范围随冲击高度而变化。穿孔尺寸随着冲击高度的增加而增加。径向穿孔区域对初始冲击速度和冲击高度几乎不敏感。