Harnessing Nonlinear Deformation in Rotating Mechanical Metamaterials

Rotating systems across various engineering fields can benefit from adaptive structures that respond to high-speed operating conditions. In this work, we explore sa passive approach using mechanical metamaterials designed to undergo controlled geometric reconfiguration under centrifugal forces. By carefully engineering the arrangement and elastic properties of these metamaterials, we demonstrate how they can maintain or enhance performance across a broad range of rotational speeds without requiring active control. Our methodology combines nonlinear finite element simulations with experimental validation via additively manufactured prototypes. At elevated speeds, the metamaterial elements shift relative to one another, reducing detrimental phenomena that often limit efficiency or reliability in rotating applications. This structural adaptation enables greater design flexibility and can potentially lower the mass and volume of rotating components, supporting both compact system architectures and sustainable design objectives. The findings offer new possibilities for rotating machinery, spinning deployable structures, and other high-speed applications that require robust performance across wide operating regimes. By embedding mechanical metamaterials into critical regions of a rotating assembly, engineers can leverage these passive morphological changes to optimize system behavior. Overall, this study lays the groundwork for next-generation rotating systems that exploit nonlinear deformations to achieve superior functionality and energy efficiency.