基于力电耦合超材料的圆柱壳结构低频减振方法研究

Based on electromechanical coupling metamaterials， a low-frequency vibration reduction approach for cylindrical shell constructions is proposed in this paper. A reduction method for the electromechanical coupling system is put forward，and the reduction model is corrected，using the modal synthesis approach. The wave resistance characteristics of the bandgap in the finite-length electromechanical coupling metamaterial cylindrical shell are studied，and the regulation law of the inductance and resistance parameters to the bandgap characteristics is analyzed. Two optimum circuit parameter design strategies are provided for low-frequency vibration reduction applications. Finally，the first three resonances are tuned using the double-layer ring strengthened cylindrical shell as the study object. The numerical simulation results reveal that the first three resonance peaks have a vibration suppression effect of over 25dB， proving that the low-frequency vibration reduction approach proposed in this paper can effectively suppress the low-frequency vibration of cylindrical shell structures.