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A Wire-Woven Kagome Transformed to have a Negative Poisson's Ratio

음의 푸아송비를 갖도록 변환된 와이어 직조 Kagome

  • Kang, Dae Seung (School of Mechanical Engineering, Chonnam Nat'l Univ.) ;
  • Han, Seung Chul (School of Mechanical Engineering, Chonnam Nat'l Univ.) ;
  • Park, Jong Woo (School of Mechanical Engineering, Chonnam Nat'l Univ.) ;
  • Nguyen, Dang Ban (School of Mechanical Engineering, Chonnam Nat'l Univ.) ;
  • Kang, Kiju (School of Mechanical Engineering, Chonnam Nat'l Univ.)
  • 강대승 (전남대학교 기계공학부) ;
  • 한승철 (전남대학교 기계공학부) ;
  • 박종우 (전남대학교 기계공학부) ;
  • ;
  • 강기주 (전남대학교 기계공학부)
  • Received : 2016.03.30
  • Accepted : 2016.07.11
  • Published : 2016.09.01

Abstract

Wire-woven Kagome is a kind of Periodic Cellular Metal, which is known to have high strength, stiffness for its weight, and potential for mass production. In this work, we developed a new structure that mimics ${\alpha}$-cristobalite. First, an ordinary wire-woven Kagome was fabricated using metallic wires, and the tetrahedral cells were then filled with metal balls and epoxy. The wire-woven Kagome was transformed to have a negative Poisson's ratio by carrying out a specified amount of initial deformation. The fabrication possibility and kinematic behavior were checked by using FEA simulation. Finally, the mechanical properties were measured using compressive tests.

Keywords

Poisson's Ratio;Wire Woven Kagome;Cristobalite

Acknowledgement

Supported by : 파동에너지극한제어연구단

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