Regularities of the influence of the aerodynamic coupling of blades on the formation of the spectrum of natural vibrations of the rims of turbine wheels of gas-turbine engines

• Published in: Strength of materials Vol. 42; no. 5; pp. 593 - 605
• Main Authors: Zinkovskii, A. P., Poberezhnikov, A. V., Tsimbalyuk, V. A.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-10-2010; Springer
• Subjects: Aerodynamics; Aerospace engines; Applied sciences; Blades; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Continuous cycle engines: steam and gas turbines, jet engines; Engines and turbines; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Gas turbine engines; Gas-turbines; Joining; Materials Science; Mechanical engineering. Machine design; Physics; Rims; Solid Mechanics; Structural and continuum mechanics; Turbine wheels; Vibration; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); detuning of frequencies; natural frequencies; aerodynamic coupling; blade rim; Free vibration; Complex system; Turbojet; Aerodynamics; Turbine wheel; Natural frequency; Mechanical system; Turbine blade; Coupling; Gas turbine; Regularity; Symmetry
• ISSN: 0039-2316; 1573-9325
• DOI: 10.1007/s11223-010-9247-8

We present the results of analytic and numerical investigations aimed at the evaluation of the influence of the aerodynamic coupling of blades on the formation of the spectrum of natural vibrations of the rims of turbine wheels regarded as a complex mechanical system with structural rotational symmetry with regard for the frequency detuning of blades.