Chirality-induced tension–rotation coupling in cylindrical kirigami structures

Kirigami, a class of metamaterials composed of elastic sheets with periodic cuts, enables significant in-plane compliance through out-of-plane buckling. This study comprehensively investigates the mechanics and kinematics of chiral cylindrical kirigami structures, demonstrating the emergence of spontaneous rotational deformation under axial stretching. Experimental results reveal that the geometric constraints of the cylinder transform standard tension–torsion coupling into a macroscopic rotation in the absence of external torque. We develop a theoretical model that characterizes the relative rotation angle and Poisson's ratio using a single kinematic variable: the opening angle of the parallel cuts. Finite element simulations faithfully reproduce the experimental findings, capturing the progressive nature of the out-of-plane buckling. Notably, highly chiral structures exhibit a novel, spiral-like propagation of deformation along a helical path closely aligned with the cut orientation. ..., , # Data from: Chirality-induced tension–rotation coupling in cylindrical kirigami structures Dataset DOI: [10.5061/dryad.9zw3r22st](10.5061/dryad.9zw3r22st) ## Description of the data and file structure This dataset supports the experimental and numerical investigation of chiral cylindrical kirigami structures. It includes 3D geometry files (.stp), mesh data (.msh, .vtu), FEM simulation results (.vtu, .npy), and experimental measurements (.csv). These data can be used to reproduce figures in the associated paper and validate the proposed linkage model. ### Files and variables * `data0/model`: * `data0/model/geometory_data`: Contains `.stp` geometry files created using Rhinoceros 3D. The filenames are labeled by chiral index (e.g., `cylindical_kirigami_12_12.stp` for the (12,12) structure). * `data0/model/mesh_data`: Contains mesh data used for numerical simulations. The filenames are labeled by chiral index. The following examples correspond to the (12,12) structure: ..., ,