Numerical investigation on dynamic response of bio-inspired honeycomb sandwich beams under oblique impact loading

doi:10.19936/j.cnki.2096-8000.20231028.003

Abstract

Abstract: In order to investigate the mechanical response of the new bio-inspired honeycomb sandwich beam (BHSB) with double core under low velocity oblique impact, a 3D finite element numerical model of BHSB was established via ABAQUS finite element software. And the numerical results are compared with the experimental results to verify the validity of the model. Based on the validated finite element model, the influence of impact angle on damage mode, contact force peak value, contact time and energy absorption of BHSB was studied. Meanwhile, the mechanical properties of BHSB under different impact energies were discussed, and the failure mode and failure mechanism of BHSB under oblique impact load were analyzed. The results show the peak load and energy absorption decrease by 2%~4% and 23%~52%, respectively, the damage area decreases and the contact time increases with the increase of impact angle. With the increase of impact energy, the damage of BHSB increases, the peak load increases by 20%~42%, and the energy absorption efficiency increases from 59% to 83%. The effects of impact angle and impact energy on the oblique impact performance of bionic honeycomb sandwich structures can provide some guides for the practical application of similar structures.

Key words: bio-inspired design, finite element model, sandwich beam, impact resistance, composites

CLC Number:

TB332

ZHANG Wenping, KONG Xiangqing, ZHANG Huiling, ZHANG Wenjiao, LI Ruonan, FU Ying. Numerical investigation on dynamic response of bio-inspired honeycomb sandwich beams under oblique impact loading[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(10): 17-22.

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