Whirl-flutter control via piezoelectric shunt damping effect

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorHaramura Bastos, Sérvio Túlio Suenai-
Autor(es): dc.creatorde Vasconcellos, Rui Marcos Grombone-
Data de aceite: dc.date.accessioned2025-08-21T21:54:29Z-
Data de disponibilização: dc.date.available2025-08-21T21:54:29Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2022-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.2514/6.2023-2220-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299014-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299014-
Descrição: dc.descriptionThe whirl-flutter phenomenon is an aeroelastic instability that must be predicted and controlled during the design of a propeller-driven aircraft. Commonly, propeller propulsion systems attached to wing structure are susceptible to this phenomenon, especially when considering large rotor diameters, such as vertical take-off and landing (VTOL) aircraft. Depending on the cruise speed among several parameters, a diverging precession motion occurs in the rotor, in a combination of structural, aerodynamic and gyroscopic effects, influencing the design of rotors, wings and pylons. Additionally, aeronautical structures always will present a certain level of nonlinear behavior, due to material properties, junctions and articulations that must be considered. With the advent of modern air mobility, a better understanding of such phenomenon, including nonlinear behaviors and the possible control techniques to increase the stability margins becomes important. Therefore, the present research proposes a passive control technique based on the piezoelectric shunt damping effect, in a unimorph configuration connected to the structure, which presents a hardening nonlinearity. Results shows that the presence of the piezoelectric material connected to a load resistance can postpone the flutter speed, improving the system’s stability and reducing the amplitude of oscillation. A range of optimal load resistances, over which the harvested power is maximized and the passive control is more effective is obtained. Additionally, the nonlinear hardening effect provides a limit cycle oscillation in the post-flutter regime.-
Descrição: dc.descriptionAeronautical Engineering Department Sao Paulo State University (Unesp) School of Engineering, Campus of Sao Joao da Boa Vista, São João da Boa Vista-
Descrição: dc.descriptionAeronautical Engineering Department Sao Paulo State University (Unesp) School of Engineering, Campus of Sao Joao da Boa Vista, São João da Boa Vista-
Idioma: dc.languageen-
Relação: dc.relationAIAA SciTech Forum and Exposition, 2023-
???dc.source???: dc.sourceScopus-
Título: dc.titleWhirl-flutter control via piezoelectric shunt damping effect-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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