An approach to modifying auxetic structure with high flexibility 3D printed polymer part

Mechanical metamaterials with distinct macroscopic properties have drawn more attention in recent years. Auxetic mechanical metamaterials stand out among these materials due to their fascinating trait of having a negative Poisson’s ratio. Unlike typical materials, they can expand laterally when stretched longitudinally thanks to this characteristic. A new class of hierarchical auxetics based on the rotating rigid unit’s mechanism is researched in order to examine the possibilities of hierarchical auxetic mechanical metamaterials in real-world applications. The primary goal of the study is to develop and 3Dprint auxetic lattice structures and shoe soles. To comprehend the mechanical behaviour and verify the auxetic property, the findings of experimental and Finite Element Analysis (FEA) analysis are compared. The study reveals auxetic materials’ potential for use in a range of applications, including footwear.