INVESTIGATION OF THE AUXETIC BEHAVIOR OF AN ORIGINAL LATTICE STRUCTURE DESIGN

Year 2023, Volume: 11 Issue: 4, 1081 - 1091, 28.12.2023

Nuriye Nur Kaya , Cengiz Eldem , İhsan Toktas

https://doi.org/10.29109/gujsc.1367616

Cited By: 1

Abstract

Auxetic structures are special structures with negative Poisson's ratio due to their geometric shapes in their internal structure. When tensile force is applied to these structures, transverse and longitudinal expansions are observed, while transverse and longitudinal contractions are observed when compressive force is applied. There are many different unit cell designs such as chiral, arrowhead, re-entrant in auxetic structures. In this study, a unique cell design was studied and the behavior of an auxetic lattice structure was investigated. The lattice structure designed with different geometric thicknesses and different matrices was analyzed with the finite element analysis program and found to have a negative Poisson's ratio. In the designed lattice structure, the structure with 4×4 matrix and 3 mm geometric thickness was found to have the best negative Poisson's ratio.

Keywords

Negative Poisson Ratio, Auxetic Structure, Lattice Structures

Supporting Institution

Gazi Üniversitesi BAP

Project Number

FDK-2022-8066

Thanks

Finansal destek için Gazi Üniversitesi BAP birimine (Proje no: FDK-2022-8066) teşekkür ederiz.

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