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

Abstract

The 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.

Keywords:

• Bio-inspired core
• 3D printing
• lattice structures
• free vibration
• transverse shear modulus

Acknowledgments

We thank the Advanced Vibration laboratory at the School of Mechanical Engineering, Vellore Institute of Technology (VIT), India, for carrying out the research work.

Disclosure statement

No potential competing interest was reported by the authors.