Free Vibration Analysis of Composite Sandwich Cylindrical Shells with Magneto-Rheological Fluid Core

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Lesani Fadafan, Mohammad | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44922 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Koochakzadeh, Mohammad Ali
Abstract:
Free vibration characteristics analysis of circular sandwich cylindrical shells will be investigated in this research. Sanders thin shell theory will be used for modeling base and constraint layers. Hamilton Principals will be applied to obtain governing equation of motion for the problem. Galerkin-Fourier procedure will be used to solve obtained partial differential equation of the sandwich cylindrical shell. Effects of magnetic field intensity, MR layer, base layer and constraint layer thicknesses, and boundary conditions will be investigated on vibration frequency and modal loss factor of the cylindrical shell. Finally, we will compare the performance of using a viscoelastic and an electrorheological (ER) fluid core in contrast with Magneto-Rehological type
Keywords:
Free Vibration ; Circular Sandwich Cylindrical Shells ; Magnetorheological Damper ; Costraint Layer

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