Thermoelastic strongly nonlinear vibration of rotating functionally graded ring plate
Yu Da Hu 1,2
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School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, China
Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structures, Yanshan University, Qinhuangdao, China
Submission date: 2020-06-28
Final revision date: 2020-10-08
Acceptance date: 2020-12-02
Online publication date: 2020-12-08
Publication date: 2021-01-15
Corresponding author
Yu Da Hu   

1. School of Civil Engineering and Mechanics; 2. Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structures, Yanshan University, China
Journal of Theoretical and Applied Mechanics 2021;59(1):157-171
For a metal ceramic functionally graded (FGM) ring plate, considering variations in physical properties with temperature and a power-law distribution of material components along the thickness direction, thermoelastic coupled nonlinear vibration equation in thermal environment is derived by means of Kirchhoff’s thin plate theory and the Hamiltonian principle. The transverse nonlinear vibration differential equation of the inner and outside-clamped ring plate under static load is obtained by using the Galerkin method; moreover, perturbation solution of static deflection is carried out. An improved L-P method is employed to solve the strongly nonlinear vibration equation. The vibration response and nonlinear natural frequency expression are developed. Through numerical examples, natural frequency characteristic curves of the rotating FGM ring plate are plotted. The Runge Kutta method is applied to obtain vibration response, phase and power spectrum diagrams. The influence of different parameters on natural vibration characteristics is analyzed. The results show that analytical solutions are consistent with numerical solutions, and the natural frequency decreases with an increase in the metal content and surface temperature, but grows with an increase in the rotational speed.
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