Akademik Veri Yönetim Sistemi
Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, cilt.11, sa.4, ss.1081-1091, 2023 (Hakemli Dergi)
Auxetic structures are special structures with negative Poisson's ratio due to their geometric shapes. In these structures, transverse and longitudinal expansions are observed when tensile force is applied, while transverse and longitudinal contractions are observed when compressive force is applied. There are many different unit cell designs such as chiral, arrowhead, and re- entrant in auxetic structures. In this study, a new unique structure was designed, its structural and mechanical properties were investigated and it was aimed to contribute a new unique structure to the literature. A unique cell design is designed as a lattice structure and the behavior of the structure is investigated. All of the lattice structures were loaded at the same value, and the geometric internal thickness of the lattice structures was varied and the relationship between thickness and negative Poisson's ratio was investigated. Lattice structures designed with 12 different geometric inner thicknesses starting from 0,80 mm up to 3 mm with 0,20 mm increments and with 2×4 and 4×4 matrices were analyzed with a finite element analysis program and it was determined that all designs had negative Poisson's ratio. It was found that the structure with a 4×4 matrix and 3 mm geometric thickness exhibited the best auxetic behavior in the designed lattice structures.