Numerical Simulations of Aircraft Model Impacting on the Steel Plate Reinforced Concrete Target

Compared with the reinforced concrete(RC),the steel plate concrete(SC)structure has better impact resistance and sealing performance;therefore,it has been widely used in nuclear power plant containments. In this paper,the numerical simulations of 1/7.5 scaled aircraft model impacting test on SC panels were performed by using the finite element program LS-DYNA. K&C,Winfrith and CSCM constitutive models were used to describe concrete material,respectively. The impact process,the velocity time history of the aircraft model,the damage and the maximum deflection of SC panels,the deformation of aircraft engine are numerically derived and compared with the test results.The superiority of Winfrith model is validated. Furthermore,the influences of impact velocity,steel plate thickness,compressive strength of concrete and yield strength of steel studs on the velocity timehistory of aircraft model and SC panel damage are further discussed. The results show that the steel plate thickness and the yield strength of steel s