FLUGGE SHELL THEORY AND SOLUTION FOR ORTHOTROPIC CYLINDRICAL-SHELLS UNDER PINCHING LOADS

Using the strain-displacement relations due to Flugge and a derivation method based upon that of Schwaighofer and Microys, the set of govern ing equations is derived for a general laminated cylindrical shell wit h monoclinic layers, under general distributed loads. For the particul ar case of a shell with specially orthotropic layers, a solution to th e pinched cylinder problem is obtained following the method of Yuan an d Ting, allowing a number of benchmark solutions to be obtained. Such benchmarks are presented for long and short simply supported cylinders with homogeneous orthotropic and asymmetrically laminated properties. Comparison of the analytical results with those from typical axisymme tric and general shell finite elements gives excellent agreement in al l cases. (C) 1998 Elsevier Science Ltd. All rights reserved.