Dynamic stability of cylindrical panels with transverse shear effects

The dynamic stability of simply-supported, isotropic cylindrical panels und er combined static and periodic axial forces are investigated. An extension of Donnell's shell theory to a first-order shear deformation theory is use d, and a system of Mathieu-Hill equations are obtained via a normal-mode ex pansion, and the parametric resonance response was analyzed using Bolotin's method. Results are compared with those obtained using the classical shell theory. The effects of the thickness-to-radius ratio on the instability re gions are examined in detail. (C) 1999 Elsevier Science Ltd. All rights res erved.