Abstract
This paper presents elasticity solutions for functionally graded piezoelectric plates under electric fields in cylindrical bending. Based on the generalized Mian and Spencer plate theory, the assumption of the material parameters which can vary along the thickness direction of the plate in an arbitrary fashion is kept; however, the materials are extended from elastic materials to piezoelectric materials. The electric potential function is constructed following the forms of the displacement functions in Mian and Spencer plate theory. The essential idea of Mian and Spencer plate theory (J Mech Phys Solids 46:2283–2295, 1998) is that the three-dimensional elasticity equations for inhomogeneous materials can be obtained by two-dimensional solution for homogeneous materials by straightforward substitutions. Through rigorous derivation, the corresponding elasticity solutions of cylindrical bending of functionally graded piezoelectric plates under electric fields are obtained. In the numerical examples, the accuracy of the present solutions is verified and the responses of plates subjected to electrical potential difference and electrical displacement are investigated, respectively.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (Nos. 11872336, 51808499), Project of State Key Laboratory for Strength and Vibration of Mechanical Structures (Nos. SV2020-KF-13) and the Science Foundation of Zhejiang Province of China (No. LY22E080016, LQ21A020009).
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S.L. and L.S. wrote the main manuscript text; Y.S. and F.C prepared the figures and tables; Y.S. performed the numerical simulation; B.Y. reviewed and edited the manuscript. All authors reviewed the manuscript.
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Appendices
Appendix A: Expressions of the introduced functions related to variable z and integral constants in electric potential case
Appendix B: Expressions of stress resultants and moments
where
Appendix C: Expressions of the introduced functions related to variable z and integral constants in electric displacement case
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Liang, S., Shen, Y., Cai, F. et al. Elasticity solutions of functionally graded piezoelectric plates under electric fields in cylindrical bending. Z. Angew. Math. Phys. 74, 158 (2023). https://doi.org/10.1007/s00033-023-02032-7
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DOI: https://doi.org/10.1007/s00033-023-02032-7
Keywords
- Functionally graded piezoelectric plate
- Electric field
- Cylindrical bending
- Mian and Spencer plate theory
- Elasticity solution