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EnglishThe present paper aims at studying composite cambered structures, tracking the seminar work “Rotating Blade Vibration Analysis Using Shells” presented by Leissa in Journal of Engineering for Power, in 1982, devoted to homogeneous metallic blades. A refined unidimensional (1D) formulation is here implemented to overcome the limitations of classical beam theories. With an appropriate choice of cross-sectional expansions, it is possible to make the 1D model suitable for analyzing shallow blades. This approach enables one to generate both layerwise (LW) and equivalent single layer (ESL) descriptions of the problem unknowns. Furthermore, it is possible to implement classic theories as special cases. Natural frequencies are determined for isotropic and composite blades, showing the effects of changing the fiber lamination angle of symmetric and unsymmetric configurations. Besides, this study investigates the effects of thickness and rotational speed over the structure. Significant differences between classic and high-order theories are found, concerning the accuracy and the computational costs. The causes of these differences are discussed, and the results can be used as a benchmark for future studies.
Assessment of classical, advanced, and layer-wise theories for the vibration of rotating composite anisotropic blades / Filippi, M.; Giusa, D.; Pagani, A.; Zappino, E.; Carrera, E.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - 245(2020), p. 112315.
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| Titolo: | Assessment of classical, advanced, and layer-wise theories for the vibration of rotating composite anisotropic blades |
| Autori: | |
| Data di pubblicazione: | 2020 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.compstruct.2020.112315 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Filippi et al. - Composite Structures - 2020.pdf | PDF editoriale ad accesso ristretto | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
| Rotating_Blade.pdf | AAM | 2. Post-print / Author's Accepted Manuscript |  | Embargo: 09/04/2022 Richiedi una copia |
http://hdl.handle.net/11583/2839341
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