Bandgap tuning in kerfed metastrips under extreme deformation

The process of kerfing enables planar structures with the ability to undergo dramatic out-of-plane deformation in response static loads. Starting from flat and stiff sheets, allows for formation a wide variety unconventional free-form shapes, making especially attractive architectural applications. In this work, we investigate numerically experimentally bandgap behavior densely cut kerfed strips. Our study reveals rich landscape bandgaps that is predominantly ascribable activation resonant sub-units within kerf unit cells. We also document how extreme deformability strips under twisting bending loads, enhanced by meandering pattern, can serve as tuning mechanism.