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In this paper, a piezoelectric functionally graded material parameters along the spatial distribution of mathematical simulation modified laminated plate theory , based on the application and analysis of the composition distribution factor , the thickness of each layer and layers of material microstructure parameters the most common structural form of the piezoelectric functionally graded materials - rectangular plate deflection and the impact of the stress field . The results for the optimal design of piezoelectric functionally graded material . In the second chapter of the physical parameters along the thickness distribution of three different gradient model , that is a polynomial function , non - integer power function distribution and e exponential function , in each model , it is assumed that the coefficient of elasticity , piezoelectric coefficient , dielectric coefficient according to the same power-law changes , including piezoelectric properties increase toward the plate surface . Modified laminated plate theory , and gives a basic formula and its derivation . Consider only the electric field , the plane strain and curvature rectifiable , the further we will be able to predict the deflection of each layer of the stress field and displacement field and composite board . In the third chapter , our method through numerical examples are presented in the second chapter , the shape factor of the laminated piezoelectric rectangular plate , slice thickness , number of layers were determined , and the conclusion is given .
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