Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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High velocity Impact Analysis of Carbon/Epoxy Composite Laminates

탄소/에폭시 복합재 적층판의 고속충돌 관통해석

  • 김영아 (충북대학교 대학원 구조시스템공학과) ;
  • 우경식 (충북대학교 토목공학부) ;
  • 유원영 (항공우주연구원) ;
  • 김인걸 (충남대학교 항공우주공학과) ;
  • 김종헌 (국방과학연구소)
  • Received : 2012.09.11
  • Accepted : 2012.12.18
  • Published : 2012.12.31
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Abstract

In this paper, the penetration behavior of carbon/epoxy composite laminates subjected to high velocity projectile impact was studied by numerical simulation. The composite laminates made of carbon/epoxy with $[45/0/-45/90]_{ns}$ stacking sequence and the spherical steel impactor were three-dimensionally modeled. The ply numbers of 16 and 24 and the impact velocities in the range of 140-250 m/s were considered. The analysis was performed using an explicit finite element code LS-DYNA. The residual velocity and the amount of damage were predicted and compared to the experimental results.

본 연구에서는 수치적 시뮬레이션을 통해 탄소/에폭시 복합재 적층판의 고속충돌 관통 거동을 연구하였다. 해석은 상용유한요소 해석프로그램인 LS-DYNA를 사용하여 해석을 수행하였고, 적층판 및 구형 강철 충격체 모두 3차원 요소로 모델링 하였다. 해석에는 적층순서가 $[45/0/-45/90]_{ns}$인 16 및 24장으로 된 복합재 적층판을 고려하였으며 충격체의 초기속도는 140-250 m/s 범위의 값을 사용하였다. 해석결과 예측된 잔류속도는 실험값과 비교적 잘 일치하였다.

Keywords

References

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