A bistable curved beam with magnetic torque-driven actuation has the potential for fast and untethered reconfiguration of metamaterials. However, no modeling method of a bistable curved beam whose instability is coupled with an external magnetic field for the design of active metamaterials. A bistable curved beam's second mode (S-shape) generation is essential for a multimodal and multistep reconfiguration of metamaterials, which was not explored before. Herein, we aim to construct an analytical model of a bistable curved beam’s deformation triggered by an external magnetitic field, providing magnetic torque-driven multimodal and multistep deformations.

ASME Journal of Applied Mechanics. https://doi.org/10.1115/1.4056001