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Parametric study on the response of compression-loaded composite shells with geometric and material imperfections
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hilburger, Mark W. Starnes Jr., James H. |
| Copyright Year | 2004 |
| Description | The results of a parametric study of the effects of initial imperfections on the buckling and postbuckling response of three unstiffened thinwalled compression-loaded graphite-epoxy cylindrical shells with different orthotropic and quasi-isotropic shell-wall laminates are presented. The imperfections considered include initial geometric shell-wall midsurface imperfections, shell-wall thickness variations, local shell-wall ply-gaps associated with the fabrication process, shell-end geometric imperfections, nonuniform applied end loads, and variations in the boundary conditions including the effects of elastic boundary conditions. A high-fidelity nonlinear shell analysis procedure that accurately accounts for the effects of these imperfections on the nonlinear responses and buckling loads of the shells is described. The analysis procedure includes a nonlinear static analysis that predicts stable response characteristics of the shells and a nonlinear transient analysis that predicts unstable response characteristics. |
| File Size | 26590908 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040112014 |
| Archival Resource Key | ark:/13960/t3qv8gs4t |
| Language | English |
| Publisher Date | 2004-09-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Compression Loads Boundary Conditions Shells Structural Forms Parameterization Defects Finite Element Method Cylindrical Shells Fabrication Isotropy Nonlinearity Graphite-epoxy Composites Elastic Properties Composite Structures Buckling Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
