Energy Absorption Characteristics of Bio-Inspired Honeycomb Column Thin-Walled Structure under Low Strain Rate Uniaxial Compression Loading

The beetle’s elytra have the characteristics of light weight and high energy absorption (EA). In this paper, based on internal structure beetle elytra, two bio-inspired honeycomb column thin-walled structures (BHTS) I II were fabricated by selective laser melting (SLM) technology in additive manufacturing (AM) order to understand possible influence strain rate effect (SRE) BHTS under low speed uniaxial compression loading. three different SREs (0.001 s−1, 0.01 s−1 0.1 s−1) EA BHTSs specimens during loading was discussed means out-of-plane tests verified with numerical simulations. experimental results show that SRE has a significant tests: can significantly increase initial peak crushing force (PCF) specific (SEA) all types specimens. average PCF/SEA is 12.70%/9.79% 17.63 %/11.60%, respectively, compared 0.001 s−1. These research methods reduce use materials improve utilization materials, which provide important assistance for design, manufacture modeling AM-based materials.