Buckling of moderately thick, laminated cylindrical shells under torsion
Abstract
The problem of instability of laminated circular cylindrical shells under the action of torsional loads is investigated. The analysis is based on higher order shear deformation theory where the effect of transverse shear is taken under consideration. The buckling is elastic for moderately thick composite shells and the geometry is assumed free of initial geometric imperfections. The equilibrium equations and the related boundary conditions were derived by variational methods and the buckling equations through the perturbation technique. Three theories (higher order, first order and classical) are compared to determine their range of applicability in predicting critical conditions for moderately thick, torsionally loaded, cylindrical shells. The effects on the buckling load of stacking sequence, radius to thickness ratios and length to radius ratios is assessed. The numerical results are presented, for a typical Graphite/Epoxy material, in tabular and graphical forms.
- Publication:
-
AIAA/ASME/ASCE/AHS/ASC 34th Structures, Structural Dynamics, and Materials Conference
- Pub Date:
- April 1993
- Bibcode:
- 1993ssdm.conf..315T
- Keywords:
-
- Circular Shells;
- Cylindrical Shells;
- Elastic Buckling;
- Elastic Deformation;
- Laminates;
- Torsional Stress;
- Boundary Conditions;
- Graphite-Epoxy Composites;
- Modulus Of Elasticity;
- Shear Properties;
- Structural Mechanics