Energy flow model for a high-frequency vibrating plate with free-layer damping treatment

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (14) : 321-330.

JIANG Xudong1, HAN Yuedong2, TENG Xiaoyan2

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Abstract

To predict the high-frequency vibrational response for a plate with free layer damping (FLD) treatment, the energy density equation considering high damping effect was derived using energy flow analysis (EFA) method combined with complex stiffness method. Wave transmission analysis was performed for power transfer relation at discontinuous interface of FLD. Then the energy density equation for a plate with partial FLD treatment is also achieved by EFA of coupled plate. The energy finite element method (EFEM) was employed to solve the derived energy density equations for the plate with full or partial FLD treatment. Simulated results obtained by EFEM were compared with those obtained by modal superposition method, which were used as a reference. It demonstrates that the proposed EFA model can predict the energy density of the high-frequency vibrating plate with FLD treatment with reasonable accuracy.

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vibration and wave / gantry crane / finite element analysis

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JIANG Xudong1, HAN Yuedong2, TENG Xiaoyan2. Energy flow model for a high-frequency vibrating plate with free-layer damping treatment[J]. Journal of Vibration and Shock, 2023, 42(14): 321-330

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