Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Simulation of Steel/Kevlar Hybrid Composite Helmet Subjected to Ballistic Impact

탄도 충격을 받는 Steel/Kevlar 혼합복합재 헬멧 수치 시뮬레이션

  • 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.)
  • 조종현 (충남대학교 기계설계공학과) ;
  • 이영신 (충남대학교 기계설계공학과) ;
  • 김해란 (충남대학교 기계설계공학과)
  • Received : 2012.05.17
  • Accepted : 2012.07.11
  • Published : 2012.12.01
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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.

본 논문은 AUTODYN-3D 프로그램을 이용한 방탄 헬멧의 탄도충격에 관한 연구를 하였다. 두 가지 유형의 재료가 방탄 헬멧에 사용되었다. Kevlar 및 Steel/Kevlar 혼합복합재 이다. 강구와 7.62 mm 금속피복탄이 시뮬레이션에서 사용되었다. 시뮬레이션에서 발사체의 변형된 형상과 내부에너지가 계산되었다. 결과는 Steel/Kevlar 헬멧을 관통하기 위해 요구되는 충격속도는 강구와 7.62 mm 금속피복탄에 따라 각각 655 m/s 와 845 m/s 이상이다. 결과로부터 Kevlar 와 Steel/Kevlar 헬멧 사이의 탄도 저항에 큰 차이를 볼 수 있었다. NIJ-STD-0106.01 Type II헬멧에 대한 시뮬레이션으로 충격 속도 358 m/s 의 7.62 mm 금속피복탄이 사용되었다. 시뮬레이션 결과는 Steel/Kevlar 헬멧이 충격 속도 358 m/s 의 7.62 mm 금속피복탄을 방어할 수 있는 것으로 나타났다.

Keywords

References

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