Thermomechanical Postbuckling Response and First-Ply Failure Analysis of Doubly Curved Panels

摘要: The thermomechanical postbuckling response of graphite/epoxy multilayered doubly curved (spherical and elliptic paraboloid) shell panels having rectangular planform is obtained within the framework finite element method. nonlinear equilibrium paths are predicted using displacement control method temperature-dependent material properties used in analysis. structural model based on a first-order shear deformation theory incorporating geometric nonlinearities. first-ply failure laminates with Tsai-Wu criterion. Specific numerical results reported that show effects radius-of-curvature-to-span ratio thickness-to-span-ratio stability strength characteristics subjected to combined thermal mechanical loads. Moreover, presented showing effect temperature dependence limit loads snap-through shallow panels.