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| Experiment and Numerical Simulation on Ballistic Performance of Two Thin Steel Plates With Different Strength and Ductility |
| XIAO Hong-liang,SHI Jie,CAO Wen-quan,YONG Qi-long,DONG Han |
| Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
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Abstract 51B-type 7.62mm pistol bullets were fired at thin steel plates with different strength and ductility. And the numerical simulation for the experiments was carried on by ANSYS/LS-DYNA too. The macro-appearance in the process of testing and numerical simulation were compared, such as the impact craters, bulge height and residual projectile size. At last, combined with the energy absorption of the steel plate and the bullet, the influence of the strength and ductility on ballistic performance was analyzed. The results show that: two tested steel plates almost have the same ballistic performance against the 51B-type 7.62mm pistol bullets, although the very different tensile strength and elongation they have. The numerical simulation result is consistent with the experiment, and it can reflect the process of the bullets impact target rightly. To the higher strength steel plate, energy absorption by making the projectile deformation is greater than the lower strength one, and to the higher ductility steel plate, energy absorption though its own deformation is larger than the lower ductility one. Thus, the result of two tested steel plates almost have the same ballistic performance is explained.
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Received: 14 April 2011
Published: 27 June 2012
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2012, Vol. 47 
