Monograph10.1017/CBO9780511780509
Dynamics of rotating machines
Michael I. Friswell,John E. T. Penny,Seamus D. Garvey,Arthur W. Lees +3 more
- 01 Mar 2010
TL;DR: In this article, the reader can understand the dynamics of rotating machines by using extremely simple models for each phenomenon, in which (at most) four equations capture the behavior of rotor vibration.
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Abstract: This book equips the reader to understand every important aspect of the dynamics of rotating machines. Will the vibration be large? What influences machine stability? How can the vibration be reduced? Which sorts of rotor vibration are the worst? The book develops this understanding initially using extremely simple models for each phenomenon, in which (at most) four equations capture the behavior. More detailed models are then developed based on finite element analysis, to enable the accurate simulation of the relevant phenomena for real machines. Analysis software (in MATLAB) is associated with this book, and novices to rotordynamics can expect to make good predictions of critical speeds and rotating mode shapes within days. The book is structured more as a learning guide than as a reference tome and provides readers with more than 100 worked examples and more than 100 problems and solutions.
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Citations
•Posted Content
Modeling of hydrodynamic bearings with a novel boundary parameterization approach
J. A. Mota,D. J. G. Maldonado,J. V. Valério,T. G. Ritto +3 more
- 30 Apr 2021
TL;DR: In this article, the authors revisited the simplifications made in the Navier-Stokes equations for the flow between two cylinders with a small thickness of lubricating oil film, and proposed an effective parameterization of the geometry, enabling a more detailed description of the problem and its adaptation to other contexts.
Reduced order modeling of geometrically nonlinear rotating structures using the direct parametrisation of invariant manifolds
Adrien Martin,Andrea Opreni,Alessandra Vizzaccaro,Marielle Debeurre,Loic Salles,Attilio Frangi,Olivier Thomas,Cyril Touzé +7 more
TL;DR: The direct parametrisation method for invariant manifolds is a nonlinear reduction technique which derives nonlinear mappings and reduced-order dynamics that describe the evolution of dynamical systems along a low-dimensional invariant-based span of the phase space as mentioned in this paper .
Evaluating Rub-Impact Faults in Rotor Systems with a Novel Nonlinear Vibration Transmissibility Function-Based Approach
Quankun Li,Heyu Hu,Mingfu Liao,Xingjian Jing +3 more
- 01 Jan 2023
TL;DR: A novel nonlinear vibration transmissibility function-based approach is proposed to diagnose and localize single/multiple stage rub-impact faults in rotor systems. The approach utilizes nonlinear vibration transmissibility functions and features extracted from the system response to unbalance forces. Experimental studies verify the effectiveness and reliability of the proposed approach.
Improved Units of Measure in Rotational Mechanics
Richard James Petti
TL;DR: The SI units in rotational mechanics produce physically incorrect units and violate general covariance. NI units provide a solution to these problems, but face social resistance due to the consensus on SI units.
On the continuation of quasi-periodic solutions of rotor systems with fluid-film bearings
Arthur Mereles,Diogo Stuani Alves,Kátia Lucchesi Cavalca +2 more
- 26 Aug 2024
TL;DR: This study presents a continuation method using multidimensional harmonic balance to obtain quasi-periodic solutions of rotor systems with fluid-film bearings, accounting for unbalance and fluid instability, and demonstrates its validity through comparisons with transient simulations and numerical continuation package.
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