DESIGN CONSIDERATIONS FOR MATERIALS WITH NEGATIVE POISSONS RATIOS

This article presents a study of the implications of negative Poisson' s ratios in the design of components subjected to stress. When the Poi sson's ratio becomes negative, stress concentration factors are reduce d in some situations and unchanged or increased in others. Stress deca y according to Saint Venant's principle can occur more or less rapidly as the Poisson's ratio decreases. Several design examples are present ed, including a core for a curved sandwich panel and a flexible impact buffer.