This paper presents an analytical solution for free vibration response of orthotropic laminated plate with piezoelectric layers based on a new procedure that is much simpler than those presented by Pagano and Fan. In the analysis, the 3-D piezoelectric theory is employed to develop a new concise formula for composite laminates. The natural frequencies and the corresponding mode distributions have been computed for three aspects of thickness/span of a five-layer piezoelectric laminated plate with simply supported and grounded boundaries under cylindrical bending.
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