Abstract
The volume fraction optimization of Functionally Graded Material (FGM) composite plate is investigated for stress reduction and thermo‐mechanical buckling. Material properties are assumed to be temperature dependent and varied continuously in the thickness direction. The 3‐D finite element is adopted using an 18‐node solid element to analyze the plate model more accurately for the variation of material properties and temperature field in the thickness direction. Tensile and compressive stress ratios of the structure under mechanical load are evaluated for stress analysis. Temperature at each node is obtained by solving the steady‐state heat transfer problem in the thermo‐mechanical buckling analysis, and Newton‐Raphson method is used for nonlinear analysis. Tensile stress ratios, compressive stress ratios and critical temperatures are analyzed for various thickness ratios and volume fraction distributions in the numerical study. Finally, the optimal design of FGM composite plate is investigated by conside...
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