飞机撞击核电站的模拟

Comparingdifferent fidelity models for the impact analysis of large commercial aircraftson a containment building

Xinzheng Lu, Kaiqi Lin, SongCen, Zhen Xu and Li Lin

Engineering Failure Analysis, Volume 57, November 2015, Pages 254–269

http://www.luxinzheng.net/publication6/Aircraft_Impact_Nuclear_Power_Plant_EFA_2015.htm

Abstract: Three Boeing 767 finite element modelswith different fidelities are built using CATIA, Hypermesh and LS-DYNA in thisstudy. The impacts of these models on a rigid wall and a containment building aresimulated with LS-DYNA. The simulation results show that the time histories ofthe impact forces and impulses differ significantly amongthese models for the low-speed impact case. With the increase of the impactvelocity, the time histories of impact forces and the damage of thecontainment building become similar. Moreover, the impacton the back side of the containment building will occur only when the highfidelity model impacts the containment building with a high velocity. Theover-simplified aircraft models will underestimate the impact load and induce adifferent failure mode compared to the high fidelity model. The internalstructures of an aircraft should be accounted for in the impact simulation. Thisinvestigation provides a reference for further studies of aircraft impacts oncontainment buildings.

Keywords:impact; large commercial aircraft;containment building; different fidelity models; finite element simulation