Finite element formulation and free vibration analyses of rotating functionally graded blades

• Autorzy: Karahan Elif Demirsoy , Özdemir Özge

Identyfikatory

DOI

10.15632/jtam-pl/127537

• Języki publikacji: EN

Abstrakty

EN

In this study, free vibration characteristics of functionally graded (FG) blades whose material properties change through the blade thickness are inspected. Finite Element Method (FEM) is used to create blade models and to calculate natural frequencies. The blade formulations are derived for both Euler-Bernoulli and Timoshenko beams to inspect the effect of different parameters on vibration characteristics. For each beam, stiffness and mass matrices are derived from energy expressions. In the solution part, effects of several parameters, i.e. rotational speed, material properties, power law index parameter, different boundary conditions and slenderness ratio are investigated. The calculated results are compared with those in open literature and a very good agreement between them is confirmed, which reveals the correctness and accuracy of the finite element formulation developed in this study. Formulations are carried out in great detail and additionally, the results are displayed in several figures and tables, which can be a significant source of information for authors working in this area.

Słowa kluczowe

EN

helicopter blade; functionally graded material; finite element method

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2021
• Tom: Vol. 59 nr 1
• Strony: 3--15
• Opis fizyczny: Bibliogr 15 poz., tab.

Twórcy

autor

Karahan Elif Demirsoy

• Istanbul Technical University, Faculty of Aeronautics and Astronautics, Maslak, Istanbul, Turkey

autor

Özdemir Özge

• Istanbul Technical University, Faculty of Aeronautics and Astronautics, Maslak, Istanbul, Turkey

Bibliografia

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• 12. Özdemir Ö., 2019, Vibration analysis of rotating Timoshenko beams with different material distribution properties, Selcuk University, Journal of Science, Engineering and Technology, 7, 2, 272-286.
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Uwagi

„Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).”