期刊
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
卷 15, 期 5, 页码 583-606出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1099636213495751
关键词
Free vibration; forced vibration; functionally graded plates; third-order shear deformation theory; the Ritz method
An improved third-order shear deformation theory is employed to investigate free and forced vibration responses of functionally graded plates. A power law distribution is used to describe the variation of material compositions across the plate thickness. The governing equations for vibration analysis obtained using an energy approach are then solved using the Ritz method. Two types of solutions, temperature independent and dependent material properties, are considered. Many effects of the volume fraction index, temperature, material pairs, thickness, plate aspect ratio, etc., which have significant impact on dynamic behaviour of the plates, are considered in the numerical illustrations of free and forced vibration results. At high temperatures, it is observed that the maximum deflections of the functionally graded plates subjected to the dynamic loading increase with the increase of frequency ratio and temperature.
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