Radaković, Aleksandar Čukanović, Dragan Bogdanović, Gordana Blagojević, Milan Stojanović, Blaža Dragović, Danilo Manić, Nazim Applied Sciences, MDPI 10(4190) eng http://creativecommons.org/licenses/by/4.0/legalcode Abstract: Functionally graded square and rectangular plates of di erent thicknesses placed on the elastic foundation modeled according to theWinkler-Pasternak theory have been studied. The thermal and mechanical characteristics, apart from Poisson’s ratio, are considered to continuously di er through the thickness of the studied material as stated in a power-law distribution. A mathematical model of functionally graded plate which include interaction with elastic foundation is defined. The equilibrium and stability equations are derived using high order shear deformation theory that comprises various kinds of shape function and the von Karman nonlinearity. A new analytically integrable shape function has been introduced. Hamilton’s principle has been applied with the purpose of acquiring the equations of motion. An analytical method for identifying both natural frequencies and critical buckling temperature for cases of linear and nonlinear temperature change through the plate thickness has been established. In order to verify the derived theoretical results on numerical examples, an original program code has been implemented within software MATLAB. Critical buckling temperature and natural frequencies findings are shown below. Previous scientific research and papers confirms that presented both the theoretical formulation and the numerical results are accurate. The comparison has been made between newly established findings based on introduced shape function and the old findings that include 13 di erent shape functions available in previously published articles. The final part of the research provides analysis and conclusions related to the impact of the power-law index, foundation sti ness, and temperature gradient on critical buckling temperature and natural frequencies of the functionally graded plates. https://phaidrabg.bg.ac.rs/o:29477 doi:10.3390/app10124190 ISSN: 2076-3417 2020 info:eu-repo/semantics/article Thermal Buckling and Free Vibration Analysis of Functionally Graded Plate Resting on an Elastic Foundation According to High Order Shear Deformation Theory Based on New Shape Function Keywords : functionally graded plate; von Karman nonlinear theory; high order shear deformation theory; new shape function; thermal buckling; free vibration application/pdf 4539108 bytes