Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Crease Behavior of Thin Membrane

멤브레인의 접힘 거동 연구

  • 우경식 (충북대학교 구조시스템공학과)
  • Published : 2007.10.31
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Abstract

In this paper, geometrically and materially non-linear finite element analyses were performed to study the crease behavior of thin membranes. The cross-section of the membrane was modeled with 2-dimensional plane strain elements. To simulate the creasing process, the membrane mesh was folded, compressed to prescribed crease gauge by activating two rigid contact surfaces, and then released to give the crease topology. Various crease gauges were considered to investigate the effect of crease intensity on the initial deployment angle. The crease geometry was also obtained by experiments and the results were compared.

이 논문에서는 기하학적 및 재료적 비선형 유한요소해석을 통하여 멤브레인의 접힘 거동을 연구하였다. 얇은 멤브레인의 단면에 대해 평면변형률을 가정하여 2차원 요소로 모델링 하였다. 접힘 과정은 먼저 멤브레인 메쉬를 접은 후, 두 개의 강체 접촉면을 사용하여 지정된 접힘 간극까지 압축한 다음, 강체 접촉면을 풀어 접힘 형상을 얻는 순서로 모사하였다. 다양한 접힘 간극에 대해 해석을 수행하여 접힘 강도가 초기 전개각에 미치는 영향을 중심으로 결과를 고찰하였다. 또한 실제 시편에 대하여 실험을 수행하여 그 결과를 해석결과와 비교하였다.

Keywords

References

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