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http://dx.doi.org/10.1016/j.net.2021.07.008

Comparative analyses of a shield building subjected to a large commercial aircraft impact between decoupling method and coupling method  

Han, Pengfei (Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University)
Liu, Jingbo (Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University)
Fei, Bigang (State Quality (Beijing) Construction Engineering Testing & Appraisal Center)
Publication Information
Nuclear Engineering and Technology / v.54, no.1, 2022 , pp. 326-342 More about this Journal
Abstract
Comparative analyses of a shield building subjected to a large commercial aircraft impact between decoupling method and coupling method are performed in this paper. The decoupling method is applying impact force time-history curves on impact area of the shield building to study impact damage effects on structure. The coupling method is using a model including aircraft and shield building to perform simulation of the entire impact process. Impact force time-history curves of the fuselage, wing and engine and their total impact force time-history curve are obtained by the entire aircraft normally impacting the rigid wall. Taking aircraft structure and impact progress into account some loading areas are determined to perform some comparative analyses between decoupling method and coupling method, the calculation results including displacement, plastic strain of concrete and stress of steel plate in impact area are given. If the loading area is determined unreasonably, it will be difficult to assess impact damage of impact area even though the accurate impact force of each part of aircraft obtained already. The coupling method presented at last in this paper can more reasonably evaluate the dynamic response of the shield building than the decoupling methods used in the current nuclear engineering design.
Keywords
Aircraft impact; Shield building; Steel-concrete-steel sandwich panels; Decoupling and coupling method; Finite element simulation;
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