Flutter Analysis Rotating Blade of a Turbo Machinery Made of Magneto Rheological Elastomer Core

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Rayyat Rokn-Abadi, Mohammad | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50373 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Haddadpour, Hassan
Abstract:
This study considers the flutter analysis rotating blade of a turbo machinery made of magneto rheological elastomer core. The Smith theory is used for modeling the compressible subsonic flow. The classical Hamilton’s principle along with the assume mode method is used to set up the equations of motion. The validity of the derived formulation is confirmed through comparison with those obtained from the finite element software and the available results in the literature. Various parametric studies including the effects of applied magnetic field, core layer thicknesses, rotating speed, setting angle are examined for considered configuration of the rotating blade. The results show that the first natural frequency and loss factor of the rotating blade of a turbo machinery is strongly influenced by the magnetic field strength, core layer thicknesses, hub radius, setting angle. Also results show that the aeroelasticity stability regions increases with increase in magnetic field intensity
Keywords:
Aeroelasticity ; Sandwich Beam ; Stability ; Turbomachines ; Magnetorheological (MR)Fluid ; Flutter

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