ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Active Rotating Beams

Ganguli, Ranjan and Thakkar, Dipali and Viswamurthy, Sathyamangalam Ramanarayanan (2015) Active Rotating Beams. [Book Chapter]

Full text not available from this repository.
Official URL: https://doi.org/10.1007/978-3-319-24768-7_8


From this chapter onwards, we will address the active twist rotor using piezoelectric actuation. The helicopter rotor blades can be considered as a closer approximation to rotating beams due to their high aspect ratios. However, the structural dynamic and aerodynamic behavior are highly coupled for helicopter rotor blades. To obtain an idea about the physics behind the active twist concept and to validate the formulation and analysis developed in the previous chapter, aerodynamic loads are not included in this chapter and the effect of time varying tip loads on the dynamic behavior of rotating rectangular section beams is studied. Introduction to the theory of rotating beams is given in Sect. 8.1. Section 8.2 describes the model selected for the dynamic analysis of rotating beam. In Sect. 8.3, the bending actuation mechanism is investigated. Section 8.4 presents the analysis utilizing torsion actuation and discusses its effect on beam response. Section 8.5 discusses the importance of nonlinear terms by applying a tip sinusoidal load in the framework of torsion actuation. A similar study, in the framework of bending actuation is presented in Sect. 8.6. Section 8.7 highlights the effect of torsion actuation on a pretwisted beam. Lastly, important findings are summarized in Sect. 8.8.

Item Type: Book Chapter
Series.: Advances in Industrial Control
Publisher: Springer International Publishing
Additional Information: The Copyright of this article belongs to Springer
Keywords: Aerodynamics; Aspect ratio; Structural dynamics; Torsional stress; Turbomachine blades; Active twist rotor; Bending actuation; Dynamic behaviors; Helicopter rotor blades; High aspect ratio; Nonlinear terms; Piezoelectric actuation; Rectangular section beams; Helicopter rotors
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 29 May 2022 04:54
Last Modified: 31 May 2022 04:56
URI: https://eprints.iisc.ac.in/id/eprint/72568

Actions (login required)

View Item View Item