Original Article
  • Development of Low-Velocity Impact Analysis Model of Carbon-Steel Laminates through Finite Element Analysis
  • Byung-Jin Park, Dong-Woo Lee, Jung-Il Song
  • Department of Mechanical Engineering, Changwon National University,Department of Mechanical Engineering, Changwon National University, Corresponding author
  • 유한요소해석을 통한 탄소섬유-연강 적층판의 저속 충격 해석 모델 개발
  • 박병진, 이동우, 송정일
Abstract
In this study, finite element analysis of Carbon-Steel Laminates with different layup pattern was conducted to verify similarity to the results of previous studies and to develop the effective model for lowvelocity impact analysis. As in the experiment, Finite element analysis of the Fiber metal laminates (FMLs) with five different lamination patterns was carried out, and the impact resistance of the FMLs was confirmed by comparing the energy absorption ratio. The FMLs showed the higher energy absorption ratio than the mild steel having the same thickness, and it was confirmed that all the FMLs had the high energy absorption ratio over than 96%. In addition, the low-velocity impact analysis model proposed in this study can be effectively used to study composite forms and automotive structures.

본 연구에서는 적층 패턴이 다른 5가지 섬유금속적층판(Fiber Metal Laminates, FMLs)에 대한 유한요소해석을 수행하여 선행 연구로 수행한 낙추충격시험과의 유사성을 검증하였고, 효과적인 저속 충격 해석 모델을 개발하였다. 또한 동일한 두께를 가지는 연강(mild steel)과 에너지흡수율을 비교하여 Carbon-Steel 섬유금속적층판의 내충격성을 확인하였다. Carbon-Steel 섬유금속적층판은 동일한 두께를 가지는 연강에 비하여 우수한 충격흡수율을 보였으며, 모든 적층 패턴에서 96% 이상의 높은 에너지흡수율 갖는 것을 확인하였다. 본 연구에서 제시한 저속 충격 해석 모델은 복합형상 및 자동차 구조체 연구에 효과적으로 적용할 수 있을 것으로 판단된다.

Keywords: Fiber-metal laminates, Low velocity impact, Drop weight impact test, Finite element analysis, Absorbed energy

Keywords: 섬유금속적층판, 저속충격, 낙추충격시험, 유한요소해석, 흡수에너지

This Article

  • 2018; 31(5): 215-220

    Published on Oct 31, 2018