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http://dx.doi.org/10.3795/KSME-A.2016.40.9.827

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

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.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.9, 2016 , pp. 827-833 More about this Journal
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;
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