多次冲击条件下人工软骨仿生材料的力学性能试验研究OA

Multiple impact performance tests were conducted on three types of artificial cartilage biomimetic metamaterials(ACF)with different densities.The effects of density and impact energy on peak load,maximum compression displacement,and energy absorption effect of ACF specimens under repeated impacts were analyzed.The research results indicate that:during the impact compression phase,the impact load-displacement responses of ACFs with different densities resemble the typical"three-stage"loading process of porous foam materials,with nearly complete deformation recovery observed 5 minutes after impact termination.The peak impact force and maximum compression displacement of ACF specimens show dependencies on both material density and impact energy.Under identical impact energy conditions,the peak impact load and maximum deformation of ACF specimens increase with successive impacts.The energy absorption performance of ACF specimens demonstrates minimal variation across different impact sequences,revealing corresponding stability in impact energy absorption capability.