Study on mechanical properties of multi -structure dactyl -inspired sandwich honeycomb with basalt fiber

The periodic region with a helicoidal structure and the impact zone with a herringbone structure of the mantis shrimp's dactyl club, which makes it excellent in energy absorption. This biological structure gives us effective methods for making novel composite structures. In this paper, a dactyl -inspired sinusoidal -corrugated heli- coidal sandwich -structural honeycomb (DSHSH) was manufactured with unidirectional basalt fiber and alu- minum honeycomb based on periodic region and impact region of dactyl club. The DSHSH was compared with dactyl -inspired sinusoidal -corrugated plain -woven skin sandwich -structural honeycomb (DSPSH) and dactyl -inspired sinusoidal -corrugated unidirectional skin sandwich -structural honeycomb (DSUSH), dactyl - inspired helicoidal sandwich -structural honeycomb (DHSH), traditional plain -woven skin sandwich - structural honeycomb (TPSH), and traditional unidirectional skin sandwich -structural honeycomb (TUSH) in tests of impact and flexrual. The results exhibited that DSHSH that simulates multi -structures (periodic and impact regions) significantly improves peak load and energy absorption capabilities.