
Free Vibration Analysis of Composite Damping Plate
SU Jianmin, LIU Xiangya, WANG Xiaolin, YAN Yangyang, LI Qiang
Free Vibration Analysis of Composite Damping Plate
Based on the first-order shear deformation theory, the vibration balance equation of damping plate was obtained by the Hamilton principle. The Navier closed-loop solution was used to solve the damping plate structure with four sides simply supported constraints, and the correctness of the deduced vibration balance equation was verified by comparison with the simulation results. The verified equation was used to analyze the dynamic characteristics of the structure. The results show that the vibration frequency of the first four orders of the composite damping plate structure was the smallest and the loss factor is the largest when the thickness of the composite sandwich plate with a specific damping material was inserted to a certain value. When the thickness of the composite layer was kept constant and the thickness and side length of the embedded damping material were changed, the vibration frequency decreased and the loss factor of the structure increased.
Shear deformation / Equilibrium equation / Simply support / Damping plate / Dynamic characterization
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