Nonlinear Analysis of Rod Fastened Rotor under Nonuniform Contact Stiffness
Joint Authors
Li, Jiaqi
Li, Yao
Zhang, Fan
Feng, Yinli
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Rod fastened rotor is widely used in gas turbine, aero engine, and other occasions.
The bending stiffness of the contact interface directly affects the stable operation of the rotor.
Dynamic model of the rod fastened rotor-bearing system has been established considering nonuniform stiffness of interface.
The motion equation of this system has been deduced from Lagrange’s equations.
The linear dynamic characteristics of this rotor has been investigated, such as Campbell diagram, critical speed, and formation, and the nonlinear characteristics of this system, such as chaos and bifurcation, has been investigated too.
The result shows that “bistable state” characteristic appeared on the rod fastened rotor system; that is, there are two critical speeds for each order, and they are all positive precession critical speed, and the amplitude response to the lower critical speed is much larger than that its counterparts to the higher critical speed.
In terms of nonlinear characteristics, the rod fastened bearing system has experienced periodic 1 motion, multiple periodic motion, quasi-periodic motion, periodic 1 motion, and chaotic motion successively.
American Psychological Association (APA)
Li, Jiaqi& Li, Yao& Zhang, Fan& Feng, Yinli. 2020. Nonlinear Analysis of Rod Fastened Rotor under Nonuniform Contact Stiffness. Shock and Vibration،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212911
Modern Language Association (MLA)
Li, Jiaqi…[et al.]. Nonlinear Analysis of Rod Fastened Rotor under Nonuniform Contact Stiffness. Shock and Vibration No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1212911
American Medical Association (AMA)
Li, Jiaqi& Li, Yao& Zhang, Fan& Feng, Yinli. Nonlinear Analysis of Rod Fastened Rotor under Nonuniform Contact Stiffness. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212911
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212911