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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A study on the optimization of three-dimensional auxetic pyramid structure by using EDISON program

EDISON 프로그램을 사용한 3차원 팽창 피라미드 구조의 최적화 연구

  • Kim, Gyu-Young (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Kim, Soo-ho (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Yun, Gi-Won (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Kim, Hyun-Gyu (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • Received : 2017.06.12
  • Accepted : 2017.08.08
  • Published : 2017.09.01
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Abstract

Auxetic structures with negative Poisson's ratio can be used to achieve high mechanical properties in energy absorption and destruction toughness. In this paper, we aim to design an auxetic structure which has a high negative Poisson's ratio and a stiffness over 50N/mm by using an optimization method. Length(L), thickness(t) and angle(${\theta}_1$, ${\theta}_2$) of an auxetic pyramid are the design parameters, and also stress, Poisson's ratio and stiffness are thr reaction factors. We used Box-Behnken method and conducted 4 factors - 3 levels experiment design. Finite element models are analyzed by using Edison program CSD_EPLAST.

팽창(auxetic) 구조물은 음의 프와송 비로 거동하는 구조체로, 에너지 흡수 및 파괴 인성 등이 높은 것으로 알려져 있다. 본 논문에서는 최적화의 목적을 음의 프와송비가 높으며 50 N/mm 이상의 강성을 갖는 팽창 구조를 설계하고자한다. 길이, 두께, 각도를 설계 인자로 정의하였고, 응력, 프와송 비 그리고 강성을 반응 요소로서 정의하였다. Box-Behnken 방법을 사용하여 4인자, 3수준 실험 설계를 수행하였고, Edison 프로그램 중 CSD_EPLAST를 사용하여 유한요소 해석을 수행하였다.

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References

  1. Liu, Y., and Ma, Z.-D., 2007, Nonlinear analysis and design investigation of a negative Poisson's ratio material, ASME 2007 International Mechanical Engineering Congress and Exposition, Vol.10, pp.965-973.
  2. Lakes, R., 1993, Advances in negative Poisson's ratio materials, Advanced Materials, Vol.5, pp.293-296. https://doi.org/10.1002/adma.19930050416
  3. Elipe, J.C.A., and Lantada, A.D., 2012, Comparative study of auxetic geometries by means of computer-aided design and engineering, Smart Materials and Structures, Vol. 21, pp.12-24.
  4. Kang, D. S., Han, S. C., Park, J. W., Ban, N. D., and Kang, K., 2016, A wire-woven Kagome transformed to have a negative Poisson's ratio, Transactions of Korean Society of Mechanical Engineering A., Vol.40, pp.827-833. https://doi.org/10.3795/KSME-A.2016.40.9.827
  5. Ma, Z. D., 2011, Three-dimensional auxetic structures and applications thereof, U.S. Patent No. 7,910,193.
  6. HexWeb., Honeycomb Attributes and Properties, Hexcel Composites. 1999.
  7. Kim, K. and Kim, D.-M., 2011, Contact pressure of non-pneumatic tires with auxetic spokes, Journal of the Korean Society for Aeronautical and Space Sciences, Vol.39, No.8, pp.719-724. https://doi.org/10.5139/JKSAS.2011.39.8.719
  8. Lee, S., Analysis of engineering statistical data using Minitab, Eretech, 2008.