STATIC BEHAVIOR OF FGM CYLINDRICAL PANEL WITH POROSITIES IN HYGRO-THERMAL ENVIRONMENT.

In this study, the deflection and stress field of perfect and imperfect (with and without porosities) functionally graded (FG) cylindrical panels are determined following the first-order shear deformation theory (FSDT). The panel rested on the twoparameter elastic foundation (Pasternak foundation) under pressure loads and worked in a hygro-thermal environment. Navier's solution has been used for simply supported cylindrical panels to analyze the effects of porosity, geometrical and foundation parameters, as well as temperature and humidity on deflection and stress field. The validated examples demonstrate the reliability of the solution and the self-written Matlab program. Numerical investigations show a significant hygro-thermal effect on the static response of the FG panel. [ABSTRACT FROM AUTHOR]