Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Mechanical Properties and Structural Analyses for the Corrugated 3 Layered Sandwich Panels

코로게이트 3층 샌드위치 패널 구조체 물성 및 구조해석

  • Yun, Su-Jin (The 4th R&D Institute - 5th Directorate, Agency for Defense Development) ;
  • Heo, Yeup (The 4th R&D Institute - 5th Directorate, Agency for Defense Development) ;
  • Gil, Hyun-Young (The 4th R&D Institute - 5th Directorate, Agency for Defense Development) ;
  • Park, Dong-Chang (The 4th R&D Institute - 5th Directorate, Agency for Defense Development)
  • Received : 2019.05.07
  • Accepted : 2019.09.15
  • Published : 2019.10.01
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Abstract

In the present work, structural analyses for light weight corrugate 3 layered sandwich panels are carried out. The mechanical properties of the sandwich panels are obtained using the modified analytical closed form based on a corrugated panel deformation and the homogenization scheme of an uniaxial composite. Subsequently, the mechanical properties estimated by the two aforementioned methods were employed for the numerical analyses for the corrugated sandwich panels under the specifically loading conditions, and a comparison between two methods was also made.

본 연구에서는 경량 코로게이트 3층 샌드위치 패널 구조체와 관련하여 구조해석 및 분석결과들에 대해서 언급되었다. 기계적 물성의 획득을 위해 코로게이트 변형거동에 기반을 둔 분석식이 이용되었으며 이 때 보다 실제적인 물성을 얻기 위해 위의 식은 수정되었다. 한편 본 구조체는 일축 섬유 강화 복합재와 유사성을 가지므로 복합재 균질화기법을 통해서도 비등방 기계적 물성이 획득되었으며 두 가지 기법으로 얻은 물성은 3층 구조체의 형상 변수에 따른 특정 하중에 대한 구조해석에 적용되었으며 그 결과 또한 비교되었다.

Keywords

References

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