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http://dx.doi.org/10.3795/KSME-A.2012.36.12.1569

Numerical Simulation of Steel/Kevlar Hybrid Composite Helmet Subjected to Ballistic Impact  

Jo, Jong Hyun (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.)
Lee, Young Shin (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.)
Jin, Hai Lan (Dept. of Mechanical Design Engineering, Chungnam Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.12, 2012 , pp. 1569-1575 More about this Journal
Abstract
In this study, ballistic impact effects on a helmet were investigated using the AUTODYN-3D program. Two types of materials were used for manufacturing the helmet: single Kevlar and Steel/Kevlar hybrid composites. Furthermore, two types of bullets were used in the simulation: steel spherical and 7.62 mm full-jacketed. In the simulation, the shape deformation of the projectile and internal energy were calculated. From the results, impact velocities above 655 m/s and 845 m/s were required to perforate the Steel/Kevlar helmet with steel spherical and 7.62 mm full-jacketed bullets, respectively. The results show that there was a large difference between the ballistic resistance of the Kevlar and Steel/Kevlar helmets. For the simulation on an NIJ-STD-0106.01 Type II helmet, a 7.62 mm fulljacketed bullet with a striking velocity of 358 m/s was used. Simulation results show that the Steel/Kevlar helmet could resist a 7.62 mm full-jacketed bullet traveling at 358 m/s.
Keywords
Projectile; Ballistic Resistance; Internal Energy;
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