الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Nonlinear modelling of interference fit phenomenon has been studied for several years. As interference fit connection depends mainly on friction between the mating parts, this leads to more difficulties in modelling and analysis of such nonlinear connection. Contact between rotors and shafts depends mainly on interference fit connection whether it is press or shrink fit. In this work, three computational models are modelled and simulated using ANSYS software. These models are chosen with different rotor-shaft configurations carried out by several researchers are used for validation of our computational models to detect the optimum modelling for frictional contact parameters using ANSYS Mechanical software. One overhung rotor, while the others two are center-hung, with tapered fit and straight fit. In this study, correlations between frictional stress, pressure, sliding, and penetration in interference fit connection are computed with respect to coulomb friction coefficient (µ), and normal contact stiffness (FKN) to detect the effect of these parameters on output results. Besides, the effect of normal contact stiffness factor (FKN), coulomb coefficient of friction (µ) are studied and analyzed for 1st, and 2nd bending modes of different rotor-shaft systems in order to get the optimum value for computational studies. Friction Induced Vibration (FIV) phenomenon due to stick slip in interference fit connection is also detected in simulation process. A study steps for stick-slip instability is illustrated to define stability and instability regions for interference fit contact during modal analysis. This instability plot shows the values of FKN and corresponding value of coefficient of friction µ, which leads to the presence of Friction Induced Vibration instability phenomenon. Using the output of this study, it will lead to more precise modelling and analysis for interference-fitted rotor-shaft systems in respect to Rotor dynamic analysis and Friction Induced Vibration Instability.