ON THE ADVANCED AUXETIC COMPOSITES

Abstract

The paper’s target is to make more understandable the properties of polymer network composites made up of re-entrant cell structures (auxetic hexagons) with demonstrable auxetic properties. The behavior of auxetic composites is interpreted in the light of Cosserat elasticity which admits degrees of freedom not present in the classical elasticity: the rotation of points in the material, and a couple per unit area or the couple stress. The prediction of the Young’s modulus is developed for a laminated periodic material made up of alternating aluminum and auxetic material, by using the Laplace and Fourier transforms.