عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
NATIONAL BIBLIOGRAPHY NUMBER
Number
TL53643
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
انگلیسی
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
Stability and Bifurcation Dynamics of Journal Bearing Rotor Systems
General Material Designation
[Thesis]
First Statement of Responsibility
Xu, Yeyin
Subsequent Statement of Responsibility
Luo, Albert C. J.
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Southern Illinois University at Carbondale
Date of Publication, Distribution, etc.
2020
GENERAL NOTES
Text of Note
170 p.
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
Ph.D.
Body granting the degree
Southern Illinois University at Carbondale
Text preceding or following the note
2020
SUMMARY OR ABSTRACT
Text of Note
In this dissertation, the mechanical models of 2-DOF and 4-DOF nonlinear journal bearing rotor systems are established. A more accurate model of oil film forces is derived from Reynolds equations. The periodic motions in such nonlinear journal bearing systems are obtained through discrete mapping method. Such a semi-analytical method constructs an implicit discrete mapping structure for periodic motions by discretization of the continuous journal bearing rotor differential equations. Stable and unstable periodic solutions of periodic motions are obtained with prescribed accuracy. The bifurcation tree of periodic motions in rotor system without oil film forces is demonstrated through the route from period-1 motion to period-8 motion. Stable period-2 and unstable period-1 motion are presented for 2 DOF journal bearing rotor system. Possibly infinite periodic solutions are found in 4 DOF journal bearing rotor system. For the rotor systems, the stability and bifurcations of periodic motions are analyzed through eigenvalue analysis of the corresponding Jacobian matrix of the discretized nonlinear systems. The frequency amplitude characteristics of periodic motions in 2 DOF journal bearing system are presented for a good understanding of the nonlinear dynamics of journal bearing rotor system in frequency domain . The rich dynamics of the journal bearing systems are discovered. The numerical illustrations of stable periodic motions are brought out with the initial conditions from analytical prediction.
UNCONTROLLED SUBJECT TERMS
Subject Term
Engineering
Subject Term
Mechanical engineering
PERSONAL NAME - PRIMARY RESPONSIBILITY
Xu, Yeyin
PERSONAL NAME - SECONDARY RESPONSIBILITY
Luo, Albert C. J.
CORPORATE BODY NAME - SECONDARY RESPONSIBILITY
Southern Illinois University at Carbondale
ELECTRONIC LOCATION AND ACCESS
Electronic name
مطالعه متن کتاب p
[Thesis]
276903
a
Y
