Formulation of an improved smeared stiffener theory for buckling analysis of grid-stiffened composite panels
✍ Scribed by Navin Jaunky; Norman F. Knight Jr; Damodar R. Ambur
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 669 KB
- Volume
- 27
- Category
- Article
- ISSN
- 1359-8368
No coin nor oath required. For personal study only.
✦ Synopsis
An improved smeared stiffener theory for stiffened panels is presented that includes skin-stiffener interaction effects. The neutral surface profile of the skin-stiffener combination is developed analytically using the minimum potential energy principle and statics conditions. The skin-stiffener interaction is accounted for by computing the bending and coupling stiffness due to the stiffener and the skin in the skinstiffener region about a shift in the neutral axis at the stiffener. Buckling load results for axially stiffened, orthogrid, and general grid-stiffened panels are obtained using the smeared stiffness combined with a Rayleigh-Ritz method and are compared with results from detailed finite element analyses.