Fig. 3: Schematic diagram of the 3D mechancial metamaterial’s transformability from null-mode to hexa-mode and its experimental validation.
From: Engineering zero modes in transformable mechanical metamaterials
a The three basic configurations (gray-colored CF, blue-colored CE and red-colored PF), folding angles (θi=x,y,z can be 0, π/4 or in-between), the deformation types (hard or soft) and the corresponding number of zero modes. b A coordinate space which illustrates the 3D tessellation’s all possible combinations of the edge linkages and the corresponding types of the equivalent extremal metamaterials (0=null-mode, 1=uni-mode, 2=bi-mode, 3=tri-mode, 4=quadra-mode, 5=penta-mode, 6=hexa-mode). c The number of zero modes and the corresponding origami tessellations (CAD models) of the 3D transformable metamaterial. d Experimentally obtained and numerically calculated moduli of the ten configurations. Eff. represents effective properties obtained based on the homogenization method, and Exp. respresents experimental results obtained with the corresponding reconfigured tessellation, where error bars represent standard deviation.
