Impact Resistance and Energy Absorption of a Bioinspired Damping Twist Structure With Spaced‐Transition Layers

ABSTRACT Inspired by the Bouligand structure, this study integrates a bioinspired helicoidal architecture with a viscoelastic damping structure to propose a damping twist structure with spaced‐transition layers (DTST). The proposed DTST is compared with a conventional multilayer constrained damping (MCLD) structure to investigate the influence of the twist angle (15°–90°) on impact performance. Combining finite element simulations, low‐velocity impact tests, and 3D‐DIC measurements, the impact responses under 150 and 600 J are analyzed. Results show that the energy dissipation and impact resistance of DTST are highly dependent on the twist angle, outperforming MCLD while achieving a lightweight design. The dynamic mechanical response varies significantly with the impact energy: the force–time curve exhibits a quasi‐plateau stage at 150 J and a double‐peak force response at 600 J. Optimal energy absorption occurs at a 45° twist angle, where the specific energy absorption increases by 49% and 55% compared to the MCLD under the two impact energies, respectively. This study proposes a novel design paradigm for damping systems. The results reveal the influence of structural parameters on the impact resistance and energy absorption characteristics, providing theoretical guidance and fundamental data for the design of viscoelastic biomimetic composite dampers.