Numerical and experimental investigation on vibration characteristics of bio-inspired architected gyroid core in composite sandwich beams.

AbstractThe present study examines the vibration characteristics of GFRP sandwich beams incorporated with cellular co-continuous architected periodic gyroidal bio-inspired cores. Using the higher-order shear deformation theory (HSDT), free vibration analysis was performed analytically on the designed sandwich beam. Four distinct configurations of bio-inspired cores are considered and 3D printed using Poly-lactic Acid (PLA) material. Subsequently, alternative dynamic approach (ADA) and ASTM E1876 is used to determine the properties of core and laminate. Amongst various bio-inspired beam configurations, GM02 yield better stiffness and prominent shear modulus for its structural weight proportions and parametric studies were performed for all the core models. [ABSTRACT FROM AUTHOR]