Computational Modeling of Auxetic Woven Fabric Using Rotating Rectangle and Chiral Geometry

Auxetic materials possess negative Poisson's ratio, by which they have some unique and extraordinary properties such as improved toughness and resilience, shear and impact resistance, fracture resistance, synclastic behavior, form-fitting ability, and sound absorption, as well as vibration dampening capabilities. Weaving technology has made it possible to fabricate auxetic woven fabrics. This research involves computational modeling of rotating rectangles and chiral geometry, and thereafter their fabric production using the Arahne CAD system. And the developed fabric samples were characterized for Poisson's ratio with the help of a video extensometer. Auxeticity was successfully introduced into the fabric structure, and good agreement was observed between the model and experimental values.