After the September 11 attack, the resistant capability of containments against aircraft impacts is required to be assessed for newly constructed nuclear power plants (NPPs). In this paper, the crash of a commercial airplane Boeing 767-200ER on the reinforced concrete containment building of an NPP is analyzed using the missile-target interaction method. Two plane models with the same total weight but different fuel distribution are analyzed. The force-time history obtained by FEA (finite element analysis) is compared with the one calculated by the Riera function. In the integral analysis, the mesh sensitivity of the reinforced concrete containment model is studied, and recommendations are provided on the modelling of containment. The impact phenomenon and damage on the containment are investigated through the validated model. The fuel distribution in the aircraft is found to have strong influence on the damage of the containment, which indicates that the load distribution in the transverse direction is critical in the analysis of aircraft impact. The classic load-time function analysis is unable to incorporate this factor and may not be adequate to provide satisfactory results. For this reason, the application of an integral analysis is advantageous in the safety assessment of aircraft impact.

中文翻译：

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商用飞机对核安全影响的整体数值分析

9月11日袭击事件发生后，需要评估新建核电厂（NPP）的安全壳抵抗飞机撞击的能力。本文利用导弹-目标相互作用方法分析了一架民航飞机Boeing 767-200ER在NPP钢筋混凝土安全壳上的坠毁情况。分析了两个具有相同总重量但燃料分配不同的飞机模型。将通过FEA（有限元分析）获得的受力时间历史与通过Riera函数计算出的受力时间历史进行比较。在积分分析中，研究了钢筋混凝土安全壳模型的网格敏感性，并为安全壳模型提供了建议。通过验证模型研究了冲击现象和对安全壳的损坏。发现飞机中的燃料分布对安全壳的损坏有很大影响，这表明横向载荷分布对于分析飞机的撞击至关重要。经典的加载时间函数分析无法考虑到这一因素，并且可能不足以提供令人满意的结果。因此，积分分析的应用在飞机撞击的安全评估中是有利的。