Dynamic and resonance response analysis for a turbine blade with varying rotating speed

• Autorzy: Wang D. , Hao Z. , Chen Y. , Zhang Y.

Identyfikatory

DOI

10.15632/jtam-pl.56.1.31

• Języki publikacji: EN

Abstrakty

EN

A coupling model between turbine blades with a varying rotating speed and oncoming vortices is constructed, where the coupling of the structure and the fluid is simulated by the van der Pol oscillation. Partial differential governing equations of motions for the coupled system are obtained and discretized by using the Galerkin method. The 1:2 subharmonic resonance and the 1:1 internal resonance are investigated with the multiple scale method and first-order averaged equations are then derived. Nonlinear responses and bifurcation characteristics are studied by a numerical integration method. Stability of bifurcation curves is determined by utilizing the Routh-Hurwitz criterion. The effect of system parameters including the detuning parameter, steady-state rotating speed, amplitude of periodic perturbation for the rotating speed and freestream velocity on vibration responses are investigated.

Słowa kluczowe

EN

varying rotating speed; van der Pol oscillation; ultiple scale methodnonlinear response; bifurcation curve

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 1
• Strony: 31--42
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Wang D.

• School of Mathematical Sciences, University of Jinan, Jinan 250022, China

autor

Hao Z.

• School of Mathematical Sciences, University of Jinan, Jinan 250022, China

autor

Chen Y.

• School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

autor

Zhang Y.

• School of Mathematical Sciences, University of Jinan, Jinan 250022, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).