Driven Odd Elasticity in Passive Mechanical Metamaterials

Mohamad Rahimi; Harold S Park

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arXiv · 2607.13997

Driven Odd Elasticity in Passive Mechanical Metamaterials

Mohamad Rahimi·Harold S Park

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Abstract

We present a mechanical mechanism leveraging passive mechanical components, i.e. chiral gears and a square lattice metamaterial, to demonstrate driven odd elasticity in a mechanical metamaterial. The mechanism couples tension and shear in a non-reciprocal way, resulting in an odd shear modulus. The emergence of this odd shear modulus enables non-conservative work in a standard quasistatic strain cycle, and further enables the non-Hermitian skin effect in dynamics. Our results demonstrate that odd elasticity can be achieved in mechanical structures using passive elements without electronic components coupled with feedback or robotic control systems.

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Mohamad Rahimi, Harold S Park. 2026-07-15. Driven Odd Elasticity in Passive Mechanical Metamaterials. https://arxiv.org/abs/2607.13997

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