Design of pseudo-mechanisms and multistable units for mechanical metamaterials

Abstract

Mechanism - collections of rigid elements coupled by perfect hinges which exhibit a zero-energy motion -- motivate the design of a variety of mechanical metamaterials. We significantly enlarge this design space by considering pseudo-mechanisms, collections of elastically coupled elements that exhibit motions with very low energy costs. We show that their geometric design generally is distinct from those of true mechanisms, thus opening up a large and virtually unexplored design space. We further extend this space by designing building blocks with bistable and tristable energy landscapes, realize these by 3D printing, and show how these form unit cells for multistable metamaterials.

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Cited by in corpus (11)

• Continuum field theory for the deformations of planar kirigami
• An additive framework for kirigami design
• Theorem on the Compatibility of Spherical Kirigami Tessellations
• Programming bistability in geometrically perturbed mechanical metamaterials
• Synthetically Non-Hermitian Nonlinear Wave-like Behavior in a Topological Mechanical Metamaterial
• Effective continuum models for the buckling of non-periodic architected sheets that display quasi-mechanism behaviors
• Drive-specific adaptation in disordered mechanical networks of bistable springs
• Buckling vs unilateral constraint for a multistable metamaterial element
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• Breaking Mechanical Holography in Combinatorial Metamaterials
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