Figure 8.

The crushing of auxetics as simulated by FEA: (a) quasi-static crushing at different extents of the global strains of tetrachiral honeycomb as summated by Qi et al. [154] at a velocity of 1 m/s; (b) predicted deformation processes of a re-entrant circular auxetic honeycombs specimen at typical states in the macro- and mesoscale as simulated by Qi et al. [214]; (c) the crushing of “star” honeycombs as simulated by Wei et al. [215]; (d) static inclined compression of re-entrant honeycomb auxetic structure as simulated by Singh et al. [216], where (d-i) shows the effect of angle of the inclination θ of how the load is applied and (d-ii) focuses on the system where θ = 0°, 20°, showing the deformation at different extents of applied strain.