RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA
SUN YuZhou
YANG ZhuoRan
XIA Yan
JIANG Han
Abstract：Thin-walled energy absorber plays an important role in aerospace,transportation and other fields.Inspired by carambola fruit with excellent crashworthiness,the bio-inspired pentacle thin-walled structure was designed.The deformation and energy absorption mechanism of the structure were analyzed by finite element simulation,experiment and theory.The influence of cross-section shapes and geometric parameters on the energy absorption characteristics were discussed.Investigations were carried out on the optimization effect of hierarchy and stiffener on crashworthiness.The results show that the bio-inspired pentacle thin-walled structure has regular progressive folding deformation mechanism.The crashworthiness properties of pentacle thin-walled structure,such as specific energy absorption and crushing force efficiency,are significantly better than that of thin-walled structures with common sections,showing good engineering application potential.
Keywords：CrashworthinessThin-walled structureEnergy absorptionFinite element simulationStructural bionics
Publication Date：2024-02-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 40-47 )