Nonlinear waves at the free surface of flexible mechanical metamaterials

Kavli Affiliate: Katia Bertoldi

| First 5 Authors: Bolei Deng, Hang Shu, Jian Li, Chengyang Mo, Jordan R. Raney

| Summary:

In this letter we investigate the propagation of nonlinear pulses along the
free surface of flexible metamaterials based on the rotating squares mechanism.
While these metamaterials have previously been shown to support the propagation
of elastic vector solitons through their bulk, here we demonstrate that they
can also support the stable propagation of nonlinear pulses along their free
surface. Further, we show that the stability of these surface pulses is higher
when they minimally interact with the linear dispersive surface modes. Finally,
we provide guidelines to select geometries that minimize such interactions.

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