An Experimental Investigation of Whirl Instability Including Effects of Lubricant Temperature in Plain Circular Journal Bearings PDF Download
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Author: Darryl Chauvin (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Darryl Chauvin (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: J. K. Wang
Publisher: John Wiley & Sons
ISBN: 1118536347
Category : Science
Languages : en
Pages : 216
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Book Description
Thermohydrodynamic Instability in Fluid-Film Bearings aims to establish instability criteria for a rotor-bearing system associated with fluid-film journal bearings. • It focuses on how the influencing factors such as rotor flexibility, manufacturing imperfections such as residual shaft unbalance, and service-related imperfections such as uneven wear affect the stability of a rotor-bearing system • It shows how the specific operating conditions such as oil inlet temperature, inlet pressure, and inlet position of a rotor-bearing system directly influence the system stability • General design guidelines have been summarized to guide the engineering system design and the correction of failure and/or malfunction
Author: Institution of Mechanical Engineers
Publisher: Elsevier
ISBN: 085709453X
Category : Technology & Engineering
Languages : en
Pages : 847
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Book Description
This book presents the papers from the 10th International Conference on Vibrations in Rotating Machinery. This conference, first held in 1976, has defined and redefined the state-of-the-art in the many aspects of vibration encountered in rotating machinery. Distinguished by an excellent mix of industrial and academic participation achieved, these papers present the latest methods of theoretical, experimental and computational rotordynamics, alongside the current issues of concern in the further development of rotating machines. Topics are aimed at propelling forward the standards of excellence in the design and operation of rotating machines. - Presents latest methods of theoretical, experimental and computational rotordynamics - Covers current issues of concern in the further development of rotating machines
Author: Tadeusz Uhl
Publisher: Springer
ISBN: 3030201317
Category : Technology & Engineering
Languages : en
Pages : 4248
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Book Description
This book gathers the proceedings of the 15th IFToMM World Congress, which was held in Krakow, Poland, from June 30 to July 4, 2019. Having been organized every four years since 1965, the Congress represents the world’s largest scientific event on mechanism and machine science (MMS). The contributions cover an extremely diverse range of topics, including biomechanical engineering, computational kinematics, design methodologies, dynamics of machinery, multibody dynamics, gearing and transmissions, history of MMS, linkage and mechanical controls, robotics and mechatronics, micro-mechanisms, reliability of machines and mechanisms, rotor dynamics, standardization of terminology, sustainable energy systems, transportation machinery, tribology and vibration. Selected by means of a rigorous international peer-review process, they highlight numerous exciting advances and ideas that will spur novel research directions and foster new multidisciplinary collaborations.
Author: Zolton N. Nemeth
Publisher:
ISBN:
Category : Bearings (Machinery)
Languages : en
Pages : 52
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Author:
Publisher:
ISBN:
Category : Lubrication and lubricants
Languages : en
Pages : 460
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Author: David B. Reynolds
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 1
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Book Description
Bearing characteristics influencing the threshold speed at which large-amplitude self-excited whirl occurs incomplete, air-lubricated journal bearings were experimentally investigated. Various combinations of rotors having clearance ratios, Psi = c/r, ranging from 0.000268 to 0.002350 and symmetrical bearing assemblies having slenderness ratios, L' = L/D, ranging from 1/4 to 1 were tested. By varying slenderness and clearance ratios and unit load, by opening or closing supply orifices, or by adding unbalance, the whirl threshold speed could be varied between zero and the limit set by the available power. Experimental methods of identifying the cylindrical and conical modes of synchronous and self-excited whirl are described. The whirl hysteresis region and the nature of whirl at speeds above the threshold are examined. Three methods of avoiding large-amplitude self-excited whirl are discussed. (Author).
Author: Fredrick T. Schuller
Publisher:
ISBN:
Category : Bearings (Machinery)
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Bearing characteristics influencing the threshold speed at which large-amplitude self-excited whirl occurs incomplete, air-lubricated journal bearings were experimentally investigated. Various combinations of rotors having clearance ratios, Psi = c/r, ranging from 0.000268 to 0.002350 and symmetrical bearing assemblies having slenderness ratios, L' = L/D, ranging from 1/4 to 1 were tested. By varying slenderness and clearance ratios and unit load, by opening or closing supply orifices, or by adding unbalance, the whirl threshold speed could be varied between zero and the limit set by the available power. Experimental methods of identifying the cylindrical and conical modes of synchronous and self-excited whirl are described. The whirl hysteresis region and the nature of whirl at speeds above the threshold are examined. Three methods of avoiding large-amplitude self-excited whirl are discussed. (Author).
