Modified 2D arc-star-shaped structure with negative Poisson’s ratio

Abstract

The metamaterials with negative Poisson's ratio have played an important role in engineering practice in the last decade. Their use in space, aviation, the automotive industry, and biomedicine increasing constantly. The basic idea of making these metamaterials is to use additive manufacturing to create a structure that has a negative Poisson’s ratio, unlike conventional materials that are most often used in industry (steel, wood, rubber, etc.). The design process of these metamaterials takes place by first considering the properties of the elementary structure, and then by multiplying that structure, a metamaterial with the same Poisson's ratio as the basic structure will be obtained. The paper discusses a modified 2D arc-star-shaped structure in relation to the already existing variant in the literature. The influence of the parameters of the newly proposed structure on Poisson's ratio by using the finite element method was analyzed.