Abstract
Hybrid theoretical, experimental and numerical method is proposed for free vibration and buckling of composite shell with unavoidable scatter in elastic moduli. Based on the Goggin's measurement techniques, the elastic moduli for material T300-QY8911 are measured, and a set of experimental points are obtained. The measurements of elastic moduli are quantified by either (1) the smallest ellipsoid and (2) the smallest four-dimensional uncertainty hyper-rectangle. Then uncertainty propagation in vibration and buckling problems of composite shell by ellipsoidal analysis and interval analysis are, respectively, studied from the theoretical standpoint. Comparison between these analyses is performed numerically.
| Original language | English |
|---|---|
| Pages (from-to) | 2539-2546 |
| Number of pages | 8 |
| Journal | International Journal of Solids and Structures |
| Volume | 46 |
| Issue number | 13 |
| DOIs | |
| State | Published - 15 Jun 2009 |
Keywords
- Composite shell
- Ellipsoidal analysis
- Experimental and numerical method
- Experimental data
- Hybrid theoretical
- Interval analysis
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