Theoretical and Test Study of Inertial Capacitance Metamaterial Torsional Vibration Isolators

doi:10.12068/j.issn.1005-3026.2023.05.006

Abstract

Abstract: The inertial capacitance metamaterial torsional vibration isolator is proposed to address the problem of excessive mass and volume of the current metamaterial structure in low frequency vibration suppression. Firstly， the specific structure of the inertial capacitance metamaterial vibration isolator is designed and its advantages over the conventional metamaterial vibration isolator are analyzed. Secondly， the intermediate wheel transmission mechanism is analyzed， and on the basis of the kinetic equations of the inertial capacitance metamaterial isolator， the energy band structure of the inertial capacitance metamaterial isolator and the transmission curve of the metamaterial isolation system are derived， and the influence of the diameter of the driven metal disk and the number of single cells on the vibration suppression effect of the inertial capacitance metamaterial isolator is further investigated. The effect of torsional vibration suppression of the designed inertial metamaterial isolator is verified through experiments. The results show that the maximum vibration attenuation of the designed inertial metamaterial vibration isolator can reach -60dB， which can effectively suppress the low frequency torsional vibration of the rotor system and thus meet the practical engineering requirement.

Key words: rotor system; metamaterial structure; torsional vibration suppression; inertial capacity technology; isolator

CLC Number:

TD451

ZHU Qing-dong， CHEN Ya-qiang， WU Chao， YAO Hong-liang. Theoretical and Test Study of Inertial Capacitance Metamaterial Torsional Vibration Isolators[J]. Journal of Northeastern University(Natural Science), 2023, 44(5): 651-659.

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