Fig. 5: Impact absorption of 3D printed self-locking thick-panel origami-based mechanical metamaterials.
From: Multimaterial 3D printed self-locking thick-panel origami metamaterials
a Illustration of a self-built drop tower for impact test. b Impact response of structures under impact energy of 24 J. c Impact response of structures under impact energy of 24 J within the first 40 ms. d 1st and 2nd peak impact force for Impact Structures with impact energies of 24 J. e Snapshots of the impact process of Impact Structure III and IV. f Impact responses of stacked origami metamaterials under impact energy of 72 J.
