作者: Yegao Qu , Jinpeng Su , Jinpeng Su , Qiang Zhang , Ying Tian
DOI: 10.1016/J.TWS.2021.107838
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摘要: Abstract This paper presents a modified variational method for the dynamic analysis of functionally graded piezoelectric (FGPM) deep curved beams with porosity (FGPP beam) resting on an arbitrary number discrete elastic foundations (EFs). The material properties including electrical and porous property are assumed to continuously vary in thickness direction. A principle is developed impose continuity constrains internal boundaries beam both mechanical electric field, which allows any linearly independent, complete basis functions achieve satisfactory solutions. shear, inertial curvature effects moderately thick also introduced energy functionals. superior convergence, accuracy efficiency proposed validated by comparing results those available literature. Series numerical examples presented free transient vibration FGPP different properties. influences power-law index, porosity, applied voltage EFs natural frequencies responses examined. Especially, combined other characteristics firstly presented, significance optimal design corresponding smart structures.