Research on Energy Absorption Characteristics of Bouligand Biomimetic Structure Based on CFRP Composite Materials

Enhancing the impact resistance performance of carbon fiber-reinforced polymer (CFRP) laminates stands as a prominent research focus among various nations. Existing studies have shown tendency towards arbitrary selection inter-ply helix angle values in CFRP laminates, which is accompanied by limited number samples representing chosen angles. However, existing relatively random spiral between and sample size selected angles limited, posing certain limitations. In order to tackle this problem, we employed systematic arrangement combinations select optimal for laminates. Inspired biological structures Bouligand, sequentially 19 distinct sets angles, aiming overcome inherent limitations enhance outcomes field. study, established finite element models investigate behavior Bouligand-inspired composite panels under high-velocity bullet impact. The were created selecting within range 0 90° with 5° interval. results show that energy absorption Bouligand layer-stacking plate better than conventional plate. laminate are 25° 30°, characteristics best at these also 396% higher absorbed internal 361% kinetic compared plate, significantly improving ballistic bulletproof material providing reference design individual protection equipment.