Auxetics, Theory and Textile Applications

Auxetic materials are characterized by unusual elastic behaviour, which means that when expanded in a specific direction, there are expanded in the perpendicular direction. This unique characteristic is derived from the various shapes of auxetic structures that are often characterized by complex 3D geometries. Aux-etic materials have enchanted mechanical properties such as fracture resistance, high energy absorption, and formability. Due to their advances, auxetic materials may be used in textile design and fabrication. In current manuscript the star shape auxetic microstructure in woven fabrics is studied. The results illustrate the behaviour of the auxetic microstructure in both tensile and compressive loadings. When comparing the results of the auxetic microstructure with those of the solid textile material, it is evident that the applied stresses show a more uniform distribution across the entire surface.