Abstract：In this paper, the post-buckling and bending behavior of ceramic-metal-ceramic functionally graded circular plates (S-FGM) in a thermal environment are studied. The volume fraction of the material components of the circular plate complies with Sigmoid law and bears the effect of the temperature field that changes along the thickness of the circular plate. Based on the classical plate theory, the nonlinear equilibrium equation of the static problem of the symmetric S-FGM circular plate is derived by the energy method. The equation is solved numerically by shooting method, and the influence of different boundary conditions, material composition, thermal load and other factors on the mechanical behavior of the symmetrical S-FGM circular plate is studied by using the numerical results. The numerical results show that the mechanical behavior of the symmetric S-FGM circular plate is different from that of the ordinary FGM circular plate, and the temperature rise ratio of the upper and lower surfaces of the S-FGM circular plate has a significant influence on its mechanical behavior.
2022, Vol. 43 
