Bionic structure of shark’s gill jet orifice based on artificial muscle

Abstract

Based on the biological prototype characteristics of shark’s gill jet orifice, the flexible driving characteristics of ionic exchange polymer metal composites (IPMC) artificial muscle materials and the use of sleeve flexible connector, the IPMC linear driving unit simulation model is built and the IPMC material-driving dynamic control structure of bionic gill unit is developed. Meanwhile, through the stress analysis of bionic gill plate and the motion simulation of bionic gill unit, it is verified that various dynamic control and active control of the jet orifice under the condition of different mainstream field velocities will be taken by using IPMC material-driving. Moreover, the large-deflection deformation of bionic gill plate under dynamic pressure and the comparative analysis with that of a rigid gill plate is studied, leading to the achievement of approximate revised modifier from real value to theoretical value of the displacement control of IPMC.

Keywords

shark’s jet orifice / ionic exchange polymer metal composite drive / musculoskeletal structure / bionic gill unit

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