Fig. 12From: Mathematical modeling of auxetic systems: bridging the gap between analytical models and observationPlots of the Poisson’s ratios for honeycombs having h = 2, l = 1 for an initial configuration having an angle between the ligaments of θo = 150o plotted against strain (left) and against the angle θ (right). This initial conformation is a non-re-entrant system and thus not auxetic at small strains. The shaded region (grey) highlights a non-accessible range of anglesBack to article page