Optimization of Thickness and Depth of Embedded Piezoelectric Patch in Composite Beam and Plate Structures
Wu Kegong(1),Ge Sen(2),Yan Yunju(1),Jiang Jiesheng(1)
(1,Northwestern Polytechnical University Xi'an 710072) (2,Chinese Aircraft Strength Research Institute, Xi'an, 710065)

Abstract: Using classical beam and plate theory and considering the piezoelectric effect of piezoelectric material, the objective function for finding the optimal thickness and depth of embedded piezoelectric material is set up. Optimizing the objective function, a three-dimensional plots and contour maps are presented with different modulus ratio between the basis material and piezoelectric material, which can be used to show the best configurations for the smart beams and plates when piezoelectric materials were embedded inside. The results show that both the thickness and deepness of embedded piezoelectric materials as well as modulus ratio (the Poisson ratio in the plate case) between the basis material and piezoelectric material have great influence on the actuating moment.
Keywords: composite beam and plate structure, piezoelectric patch, depth, thickness, optimization.