Numerical simulations of nuclear power plant containment subjected to aircraft impact
Numerical simulations of nuclear power plant containment subjected to aircraft impact
复制标题
飞机撞击核电站安全壳的数值模拟
DOI：
10.1016/j.nucengdes.2017.05.029
复制
发表时间：
2017-08-15
影响因子：
1.7
通讯作者：
Huang, T.
中科院分区：
文献类型：
--
作者：
Zhang, T.;Wu, H.;Huang, T.
9.11事件后，核电站安全壳对大型商用飞机撞击的防护性能一直是核安全领域的研究热点。研究了核电厂安全壳在飞机撞击作用下的数值模拟问题。首先，建立了岭澳核电站预应力安全壳和A320飞机的精细有限元模型，并分别用GE-J79发动机原型冲击试验和修正的Riera函数进行了模型标定。然后，基于验证后的有限元模型，采用弹-靶相互作用法再现了飞机与安全壳碰撞的全过程，并与载荷时程法进行了比较，表明弹-靶相互作用法在分析安全壳动力响应方面具有优越性。此外，进行了参数研究，以调查的冲击条件（位置，角度和速度）和结构的配置（壁厚，配筋率和预应力）对核电厂安全壳的冲击中心区的挠度-时间历程的影响。最后，给出了安全壳在飞机碰撞作用下最大冲击挠度的计算公式，为核电厂安全壳的设计提供了参考。(C)2017爱思唯尔B. V.保留所有权利。
Since the September 11 attacks, the protective performance of the nuclear power plant (NPP) containment against the impact of large commercial aircraft has been drawing much attention in the field of nuclear security. This paper addresses the numerical simulations of NPP containment subjected to aircraft impact. Firstly, the fine FE models of the Chinese Ling Ao NPP prestressed containment and A320 aircraft are established, and calibrated by the prototype impact test of GE-J79 engine and the modified Riera function, respectively. Then, based on the verified FE models, the entire impact process of the aircraft collision with the containment is reproduced by the missile-target interaction method, which is preferable by comparing with the loading-time history method in analyzing the dynamic responses of the containment. Furthermore, the parametric study is performed to investigate the influences of impact condition (position, angle and velocity) and structural configuration (wall thickness, reinforcement ratio and prestressing force) on the deflection-time history of the NPP containment in the impact central zone. Finally, an explicit formula for predicting the maximum impact deflection of the containment against the aircraft collision is proposed, which is helpful for the engineers in designing the NPP containment. (C) 2017 Elsevier B.V. All rights reserved.