Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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FEA Modeling and Verification of Structural Property of Large Sandwich Composite Antenna Structure

샌드위치 복합소재 대형 안테나구조물의 유한요소 모델링 및 구조 특성 검증

  • Sungwook Jang (Department of mechanical engineering, Hanwha system) ;
  • Jaeuk So (Department of mechanical engineering, Hanwha system) ;
  • Myeonggyu Lee (Department of mechanical engineering, Hanwha system) ;
  • Jongin Bae (Department of mechanical engineering, Hanwha system) ;
  • Wooseok Ji (Department of mechanical engineering, UNIST) ;
  • Hyegyu Kim (Department of mechanical engineering, UNIST) ;
  • Dongyung Kim (Department of space & defense engineering, Hankuk Spacepro)
  • 장성욱 (한화시스템(주) 기계시스템1팀) ;
  • 소재욱 (한화시스템(주) 기계시스템1팀) ;
  • 이명규 (한화시스템(주) 기계시스템1팀) ;
  • 배종인 (한화시스템(주) 기계시스템1팀) ;
  • 지우석 (울산과학기술원 기계공학과) ;
  • 김혜규 (울산과학기술원 기계공학과) ;
  • 김동영 (한국화이바 우주방산사업팀)
  • Received : 2024.09.04
  • Accepted : 2024.11.24
  • Published : 2025.02.05
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Abstract

The composite sandwich structure applied to the subject of this study is an effectively designed structure that enhances the specific stiffness of the panel. It features CFRP face sheets, which are strong under tensile and compressive loads, on both sides of an aluminum honeycomb core, a porous structure that is weak in tension and compression but strong in bending. The subject of this study weighs over 4 tons and possesses the largest weight and size among composite antenna structures in the country. Due to the lack of many references for large composite structures, accurate material properties are obtained through specimen tests, and the finite element analysis model is experimentally validated to ensure it accurately represents the actual structure. Finally, the structural robustness is verified through the structural analysis results of the validated model.

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References

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