THERMOELASTIC STABILITY OF ORTHOTROPIC CIRCULAR PLATES

摘要

In this article the thermoelastic buckling of a circular orthotropic composite plate is discussed. The plate is assumed to be geometrically perfect. The equilibrium and stability equations, derived via variational formulations, are used to determine the prebuckling forces and the buckling temperatures. The equations are based on the Love-Kirchhoff hypothesis and Sanders' nonlinear strain-displacement relation. Critical buckling temperatures associated with the uniform temperature rise, gradient through-the-thickness temperature, and linear temperature variation along the radius are obtained. The results are validated for the first type of loading with the known data in literature.