Proceeding of EDISON Challenge (EDISON SW 활용 경진대회 논문집)

Korea Institute of Science and Technology Information (한국과학기술정보연구원)
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A Study on Optimization of 3D Auxetic Pyramid Structure

3D Auxetic Pyramid 구조의 최적화 연구

  • Kim, Gyu-Young (Depart of Mechanical and Automotive Engineering, Seoul National Univ. of Science and Technology) ;
  • Kim, Soo-ho (Depart of Mechanical and Automotive Engineering, Seoul National Univ. of Science and Technology) ;
  • Yun, Gi-Won (Depart of Mechanical and Automotive Engineering, Seoul National Univ. of Science and Technology)
  • 김규영 (서울과학기술대학교 기계.자동차공학과) ;
  • 김수호 (서울과학기술대학교 기계.자동차공학과) ;
  • 윤기원 (서울과학기술대학교 기계.자동차공학과)
  • Published : 2017.03.24
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Abstract

Auxetic is a structure that behave as negative Poisson's ratio. It is known for high mechanical property like energy absorption and destruction toughness so far. In this paper, we aimed to design auxetic structure which has small internal energy when force is applied and high NPR and over 50N/mm stiffness by using optimization method. We defined length(L), thickness(t), angle(${\theta}_1$, ${\theta}_2$) as design factors and also von-Mises stress, NPR, stiffness as reaction factors. We used Box-Behnken method and conducted 4factors - 3levels experiment design. We also analyzed each models by using CSD_EPLAST, Edison program, and did extra analysis for more accurate results. Finally, we found out the optimal design factors which is satisfied aimed value and increased reliability through factor analysis and validity verification.

Keywords

Acknowledgement

Supported by : 한국연구재단