Structural Uncertainty Effect on Classical Wing Flutter Characteristics
| Autor: | Enrico Cestino, Fabio Borello, Giacomo Frulla |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Isotropy Physical system Aerospace Engineering Structural engineering Flutter Aeroelasticity Uncertainty principles Test case Probability Simple (abstract algebra) Applied mathematics General Materials Science Probabilistic analysis of algorithms Material properties business Civil and Structural Engineering |
| Zdroj: | Journal of Aerospace Engineering. 23:327-338 |
| ISSN: | 1943-5525 0893-1321 |
| DOI: | 10.1061/(asce)as.1943-5525.0000049 |
| Popis: | Flutter-critical velocity is usually estimated from deterministic analyses by assuming that physical and geometrical parameters are perfectly known. However, aleatory and epistemic uncertainties, especially those associated with the definition of material properties, are intrinsically present partly because of the random nature of every physical system and partly because those properties are evaluated from a finite number of observations. The paper focuses on the combination of structural reliability analysis with aeroelastic simulation to give a correct flutter speed evaluation for design purposes. Two typical aeronautical test cases have been considered: (1) an isotropic material structure and (2) a composite material structure. Different computational methodologies (classical and developed by authors) have been coupled with a simple two-dimensional aeroelastic model to study the qualitative consequences of uncertainty in determination of critical flutter speed and to provide a comparison between differ... |
| Databáze: | OpenAIRE |
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