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arXiv · 2307.00031

Nonlinear Topological Mechanics in Elliptically Geared Isostatic Metamaterials

Fangyuan Ma·Zheng Tang·Xiaotian Shi·Ying Wu·Jinkyu Yang·Di Zhou·Yugui Yao·Feng Li
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Abstract

Despite the extensive studies of topological systems, the experimental characterizations of strongly nonlinear topological phases have been lagging. To address this shortcoming, we design and build elliptically geared isostatic metamaterials. Their nonlinear topological transitions can be realized by collective soliton motions, which stem from the transition of nonlinear Berry phase. Endowed by the intrinsic nonlinear topological mechanics, surface polar elasticity and dislocation-bound zero modes can be created or annihilated as the topological polarization reverses orientation. Our approach integrates topological physics with strongly nonlinear mechanics and promises multi-phase structures at the micro and macro scales.

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Fangyuan Ma, Zheng Tang, Xiaotian Shi, Ying Wu, Jinkyu Yang, Di Zhou, Yugui Yao, Feng Li. 2023-06-30. Nonlinear Topological Mechanics in Elliptically Geared Isostatic Metamaterials. https://doi.org/10.1103/physrevlett.131.046101

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