Analysis of the Nonlinear Large Deformation Behavior of Composite Cylindrical Shells.
Final rept. 30 Jun 81-30 Jun 83,
GEORGIA INST OF TECH ATLANTA SCHOOL OF ENGINEERING SCIENCE AND MECHANICS
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The governing equations for the nonlinear analysis of imperfect, stiffened, laminated, circular, cylindrical, thin shells, subjected to uniform axial compression and torsion, and supported in various ways, are derived and presented. Two types of formulations have been developed one w,F-Formulation is based Donnell-type nonlinear kinematic relations and the other u, v, w - formulation is based on Sanders -type of nonlinear kinematic relations small strains, moderate rotations about in-plane axes. A solution methodology is developed and presented. Numerical results are generated for certain special geometries, and these serve as bench marks for the solution scheme. Parametric studies are performed for composite cylinders. The scope of these studies is to assess the effect of geometric imperfections lamina stacking, and length of radius ratio. The solution scheme is also tested by comparing theoretical predictions critical loads based on the developed methodology to experimentally obtained results.
- Numerical Mathematics