Fig. 11
From: Mathematical modeling of auxetic systems: bridging the gap between analytical models and observation
Plots of the Poisson’s ratios for honeycombs having h = 2, l = 1 for an initial configuration having an angle between the ligaments of θo = 1o plotted against strain (left) and against the angle θ (right). The shaded region (grey) highlights a non-accessible range of angles. Note that a second set of plots is presented which highlights a smaller range of Poisson’s ratios