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Experimental and analysis on oblique penetration of projectiles into reinforced concrete target

LIU Yong1,SONG Chunming1,HUANG Yu2,LIU Bin1(1.College of Defense Engineering,PLA Univ.of Sci.& Tech.,Nanjing 210007,China; 2.Unit No.73670 of PLA,Nanjing 210042,China)  
To investigate the failure effects of reinforced concrete under oblique penetration and the influences of the reinforcing mat,ballistic experiments with the same oblique angle were performed by use of Φ57mm projectile,the impact velocity,penetration depth,crater range and other testing parameters were provided,and the effects of reinforcing steel were also analyzed.The tests show that the destruction of the internal concrete got availably restrained by the reinforcing steel net for its good anti-tensile effect.The available formula for calculating the penetration depth do not reflect the effects of the reinforcing mat,but the reinforcing steel net can be regarded as an equivalent steel plate for its influence of the membrane force,then the penetration depth were obtained according to the method of the layered medium.The calculation results are compared with those of the empirical formula and the test data verify its validity.
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