The Effect of Fractional Damping on the Joint Shaft Coupling

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Bayat, Zahra | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50041 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Hadadpour, Hassan
Abstract:
This study presents coupled bending and torsional vibration of rotating shaft. Jeffcott rotor and Euler Bernoulli beam model are used for simulating rotating shaft. The fractional damper is used for absorbing vibration of coupling lateral and torsional vibration. Based on Lagrange method and Hamilton principle, the formulation of Jeffcott rotor and Euler Bernoulli beam vibration are obtained. Then by transforming equations in Laplace domain, the characteristic equations are obtained. In Euler Bernoulli beam, the Galerkin method is implemented to solve the governing equations. The stability of structure is investigated in Laplace domain. The effect of various parameters including power of fractional, damper, stiffness and unbalance coefficient are estimated
Keywords:
Galerkin Method ; Euler-Bernoulli Beam ; Jeffcott Rotor ; Coupled Lateral-Torsional Vibration ; Fractional Damper

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