Vibration suppression performance of case module metamaterial sealing plate

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (4) : 118-125.

VIBRATION THEORY AND INTERDISCIPLINARY RESEARCH

Vibration suppression performance of case module metamaterial sealing plate

WANG Shuai*1,2，MA Bingjie1,2,3，TONG Zongpeng1,2,3，YIN Changchun1,3，ZHANG Li1

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Abstract

In order to effectively suppress structural vibration below 200Hz, the finite element model of the gas turbine module bottom frame was built. The vibration characteristics of the bottom frame were analyzed. Based on Bloch's theorem and plane wave expansion method, the local resonance cell theory model was established. A design method of the local resonance sealing plate was proposed. The vibration response of the sealing plate on the gas turbine module was calculated. The vibration suppression performance of the local resonance bottom frame on the module was evaluated. Results show that the local resonance metamaterial technique can effectively attenuate the narrow-band vibration below 200Hz. The design method of the local resonance metamaterial sealing plate proposed in this paper can provide a new feasible means of achieving low frequency vibration control. Furthermore, the results provide a reference for ship vibration suppression.

Key words

Module / Low frequency / Vibration suppression performance / Locally resonant / Bandgap

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WANG Shuai1, 2, MA Bingjie1, 2, 3, TONG Zongpeng1, 2, 3, YIN Changchun1, 3, ZHANG Li1. Vibration suppression performance of case module metamaterial sealing plate[J]. Journal of Vibration and Shock, 2025, 44(4): 118-125

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