Journal
THIN-WALLED STRUCTURES
Volume 125, Issue -, Pages 220-233Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2018.01.007
Keywords
Free vibration; Porous material; Circular plate; Piezo-electric actuator; Differential quadrature method
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The free vibration analysis of a circular plate made up of a porous material integrated by piezoelectric actuator patches has been studied. The plate is assumed to be thin and its shear deformations have been neglected. The porous material properties vary through the plate thickness according to some given functions. Using Hamilton's variational principle and the classical plate theory (CPT) the governing motion equations have been obtained. Simple and clamped supports have been considered for the boundary conditions. The differential quadrature method (DQM) has been used for the discretizations required for numerical analysis. The effect of some parameters such as thickness ratio, porosity, piezoelectric actuators, variation of piezoelectric actuators-to-porous plate thickness ratio, pores distribution and pores compressibility on the natural frequency, radial and circumferential stresses has been illustrated. The results have been compared with the similar ones in the literature.
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