Energy Absorption Performance of Bionic Multi-cell Tubes Inspired by Shrimp chela

Abstract

This research introduced the design, analysis and optimization of bionic shrimp chela multi-cell tubes (BSCMTs) in bending by embedding an arthropod's microstructure inside a thin-walled square structure. A three-point impact bending finite element model was, in the first instance, correlated with physical tests and then modified to assess the energy absorption performance of bionic multi-cell tubes considering initial peak force, specific energy absorption and mean crushing force. Following a complex proportional assessment (COPRAS) approach and optimization phases, results demonstrated that the BSCMT with a W-shape section had the best energy absorption characteristics and should be considered in future as a possible contender for vehicle B-pillar structures that are subjected to bending and require excellent energy absorption properties to protect the occupants in high-speed impact collisions.