Zigzag-base folded sheet cellular mechanical metamaterials

Bistable auxetic mechanical metamaterials inspired by ancient geometric motifs

“…The rigid origami analogs of rotating unit auxetics are realized in Ron Resch's fold patterns [33]. Other examples are the wellknown Miura-ori origami fold [34,27] and its kirigami derivatives [32,35], all exhibiting in-plane negative Poisson's ratio.…”

Buckling-Induced Kirigami

“…a kirigami sheet). In particular, we note that our kirigami sheets possess several deformation characteristics of the Miura-ori [2,3] and zigzag-base folded kirigami [12,13] [37]). This is the result of the fact that not all the faces are rigid.…”

Material selection shape factors for compliant arrays in bending

“…where k t and k b are described by Equation 6 and Equation 7. The middle portion of the fundamental unit is considered to be rigid for bending about the y-axis as it is stiffer than all other areas of the joint in this bending mode.…”

“…CAs lend themselves towards applications such as deployable or collapsible structures as they enable a larger elastic deformation in out-of-plane bending than is possible with a solid sheet for a given material. Recent developments with the use of patterns similar to those investigated in this paper include an array for solar tracking [2], flexible lithium-ion batteries [3], an optical shutter [4], the creation of super-conformable materials for applications such as flexible circuits [5], and creating materials with extreme Poisson's ratios [6,7]. CAs can also be modified to create thick-material approximations of curved-crease origami patterns used in origami-inspired mechanisms and structures [8].…”