A SECTIONAL WARPING CORRECTIVE MODEL IN CYLINDRICAL BENDING OF ANISOTROPIC LAMINATES

A new bending model for angle-ply laminated plates is developed. Two series of in-plane displacement distributions in the thickness direction are derived by use of the sectional warping corrective theory, and hierarchical displacement functions are adopted in the length direction. Finally, based on the principle of minimum potential theory, special finite element models for cylindrical bending are obtained. Accuracy and convergence of the solution are studied, and the present results are compared with those of the existing first-order theory and higher-order theory. It is shown that the present stresses result is in good agreement with the exact solution, and the effectiveness of the present model for analyzing cylindrical bending is ascertained. The present model is simple while the freedoms are lower than those of other numerical methods.