Thermoelastic stability analysis of imperfect functionally graded cylindrical shells

摘要: Elastic buckling analysis of imperfect FGM cylindrical shells under axial compression in thermal environments is carried out, using two different models for geometrical imperfections. The material properties the functionally graded shell are assumed to vary continuously through thickness according a power law distribution volume fraction constituent materials, also temperature dependency considered. Derivation equations based on classical theory Sanders nonlinear kinematic relations. stability and compatibility obtained, out Galerkin’s method. novelty present work obtain closed form solutions critical loads shells, which may be easily used engineering design applications. effects geometry, exponent, magnitude initial imperfections, environment load investigated. results reveal that imperfections play major roles dictating bifurcation point action compressive loads. Also show particular value temperature, almost independent exponent.