Abstract
This paper is concerned with free vibration analyses of a circular transversely isotropic elastic plate based on Reddy plate theory and modified higher-order shear deformation plate theory (MHSDT). Hamilton’s principle is used to derive the equations of motion and boundary conditions of the circular plate. Natural frequencies are determined from the solution of the governing equations and boundary conditions along the circular edge. Comparisons of natural frequencies and mode shapes arising from the Mindlin plate theory, the Reddy plate theory, MHSDT, and finite element method are made for fully free and clamped circular plates. The comparison results show that MHSDT has better accuracy than the other analytical plate theories in terms of the natural frequencies and corresponding mode shapes.
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The authors gratefully acknowledge the financial supports of this research by the Ministry of Science and Technology (Republic of China) under Grant MOST 107-2221-E-002 -086 -MY3.
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Appendices
Appendix A
Case 1, clamped boundary condition:
Case 2, free boundary condition:
Appendix B
Case 1, clamped boundary condition:
Case 2, free boundary condition:
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Ji, M., Wu, YC. & Ma, CC. Theoretical analyses and numerical simulation of flexural vibration based on Reddy and modified higher-order plate theories for a transversely isotropic circular plate. Acta Mech 232, 2825–2842 (2021). https://doi.org/10.1007/s00707-021-02973-y
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DOI: https://doi.org/10.1007/s00707-021-02973-y