Research on the Vibration Characteristics of Three-component Grid Plates

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 53-57.

LIU Rong-qiang，ZHAO Hao-jiang，LI Chang-zhou，GUO Hong-wei，DENG Zong-quan

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Abstract

A three-component grid plate structure inspired by the locally resonant mechanism of phononic crystals is presented. The dispersion relations and the displacement fields of the eigenmodes of this novel grid structure are calculated by the finite element method. According to the band structures and the vibration response curves, the proposed grid structures possess low frequency band gaps along different directions. The locally resonant band gaps results from the interaction between the traveling wave mode and the local resonance. Take the first flexural vibration gap as example, effects of the geometrical parameters on the band gap are explained by equivalent mass-spring system models. These properties of band gaps in the three-component grid plates can potentially be applied to design devices for the reduction of low-frequency vibrations.

Key words

Grid plate / Local resonance / Band gap / Finite element method

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LIU Rong-qiang，ZHAO Hao-jiang，LI Chang-zhou，GUO Hong-wei，DENG Zong-quan. Research on the Vibration Characteristics of Three-component Grid Plates[J]. Journal of Vibration and Shock, 2016, 35(15): 53-57

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