Journal ArticleDOI
Dynamic stability and bifurcation phenomena of an axially loaded flexible shaft-disk system supported by flexible bearing:
Hanmant P. Phadatare,Barun Pratiher +1 more
- Vol. 234, Iss: 15, pp 2951-2967
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In this paper, the vibration and bifurcation analysis of a spinning rotor-disk-bearing system is performed to carefully scrutinize the dynamic stability under extrinsic mass unbalance and pulsatin imbalance.Abstract:
The present research studies the vibration and bifurcation analysis of a spinning rotor-disk-bearing system to carefully scrutinize the dynamic stability under extrinsic mass unbalance and pulsatin...read more
Citations
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Journal ArticleDOI
A unified modeling approach for rotating flexible shaft-disk systems with general boundary and coupling conditions
TL;DR: In this paper , a unified modeling approach for rotating flexible shaft-disk systems based on continuum theory is proposed, which can be easily extended to complex rotor systems with multiple flexible disks and supports under general boundary and coupling conditions.
Journal ArticleDOI
Stability analysis of a rotor system with electromechanically coupled boundary conditions under periodic axial load
TL;DR: In this paper, the parametric instability of a rotor system with electromechanically coupled boundary conditions under periodic axial loads is studied based on the current flowing piezoelectric shunt damping technique, the detailed rotor model is established by the finite element (FE) method.
Journal ArticleDOI
Typical Fault Modeling and Vibration Characteristics of the Turbocharger Rotor System
TL;DR: In this article , a typical failure mechanism (rotor unbalance, rotor friction, and rotor crack) and vibration characteristics of the turbocharger rotor system was established by an improved four-node aggregate parameter method.
Journal ArticleDOI
Vibration and stability analysis of a spinning shaft with arbitrary boundaries subjected to partial load
TL;DR: In this article , the exact whirl frequency equation is derived analytically for different boundary conditions, including pinned-pinned, clamped-clamped, free-free, and elastic supports.
References
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Journal ArticleDOI
Large deflection model for nonlinear flexural vibration analysis of a highly flexible rotor-bearing system
TL;DR: In this article, the rotary inertia and gyroscopic effect combined with inextensible geometric condition for pinned-guided shaft element have been taken into account to develop the governing equation of motion.
Journal ArticleDOI
Effect of cracks on nonlinear flexural vibration of rotating Timoshenko functionally graded material beam having large amplitude motion
B. Panigrahi,G. Pohit +1 more
Abstract: This study investigates the stiffening effect due to rotation on the nonlinear vibrational characteristics for cracked Timoshenko beam for the first time. Fixed end of the beam is attached to a rotating hub. Functionally graded material is taken into consideration, in which the properties vary as a continuous function along the depth of the beam. An elastic mass-less rotational spring is assumed in the place of crack, which splits the beam into two different parts. The point on the neutral axis at the fixed end is assumed to be the center of rotation of the beam. Centrifugal force is considered to act towards the spanwise direction and along the neutral axis. An additional displacement due to rotation of the beam along with the centrifugal force is incorporated with the energy formulation. Timoshenko beam theory and classical Ritz method is employed to derive the governing equations. In order to solve the nonlinear governing equations, direct substitution iterative technique is used. Effects of various parameters such as rotating speeds, radius of hub, depth of crack, location of crack, and different functionally graded material properties on linear and nonlinear vibration characteristics are studied. Validity of the present methodology is assured by comparing the results with some of the results from the existing literatures.
Journal ArticleDOI
Combination Parametric Resonance of Nonlinear Unbalanced Rotating Shafts
TL;DR: In this article, a rotating shaft with geometrical nonlinearity under parametric and external excitations is investigated and the effect of various parameters on the response of the system is studied.
Journal ArticleDOI
Dynamics of a rotating shaft—disc under a periodic axial force
TL;DR: In this paper, a rotating Timoshenko shaft with a rigid unsymmetrical disc was modelled as a parametrically excited system using the finite-element method, and dynamic stability of the system was checked, steady-state response, undamped resonance condition, and disc centre orbit were solved analytically and discussed numerically.
Journal ArticleDOI
Flexural–flexural–extensional–torsional vibration analysis of composite spinning shafts with geometrical nonlinearity
TL;DR: In this paper, an analytical expression as a function of the system parameters describing the forced vibration of a spinning composite shaft in the neighborhood of the primary resonance is obtained, and the results are compared with both one and two modes, and it is shown that although the excitation is tuned in the neighbourhood of the first mode, one-mode discretization is not sufficient and it leads to inaccurate results.