Abstract This study presents a model of a rotating hub-blade system (HBS) made of functionally graded (FG) materials with a flexible, thin-walled hub and blade, and investigates its free vibration response under aerothermoelastic loading. The aeroelastic loads on the HBS are applied using the first-order piston theory, and aerodynamic heating is utilized to account for the aero-thermal effects. The equations of motion and boundary conditions are derived using the first-order shear deformation theory (FSDT) and extended Hamilton's principle, and the extended Galerkin's method (EGM) is used to obtain a set of ordinary differential equations. An eigenvalue analysis is conducted to explore the influence of various parameters on the HBS's natural frequencies and stability in both flutter and divergence modes. The study validates the accuracy of the HBS results by comparing them with two simplified models, which demonstrate excellent agreement. The results indicate that the HBS model significantly impacts the frequency response and system stability compared to the simplified models. The study provides valuable insights into the design and optimization of rotating FG thin-walled structures under aerothermoelastic loading, which can contribute to the development of more efficient and reliable systems.
Modeling and free vibration analysis of a rotating functionally graded thin-walled hub-blade system under aerothermoelastic loading
2024-01-25
Article (Journal)
Electronic Resource
English
Thin-Walled Rotating Blades made of Functionally Graded Materials: Modeling and Vibration Analysis
British Library Conference Proceedings | 2003
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