The Dynamics of Rotor with Rubbing
This paper presents the description of some phenomena associated with dynamic behavior of rotors interacting with stationary components. Numerical simulations show rotor vibration spectrum rich in subharmonic, quasi-periodic, and chaotic vibrations. The nonlinear calculation techniques are applied t...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
1999-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1023621X99000263 |
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| _version_ | 1832552702278631424 |
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| author | Jerzy T. Sawicki Joe Padovan Rabih Al-Khatib |
| author_facet | Jerzy T. Sawicki Joe Padovan Rabih Al-Khatib |
| author_sort | Jerzy T. Sawicki |
| collection | DOAJ |
| description | This paper presents the description of some phenomena associated with dynamic behavior of rotors interacting with stationary components. Numerical simulations show rotor vibration spectrum rich in subharmonic, quasi-periodic, and chaotic vibrations. The nonlinear
calculation techniques are applied to demonstrate the changes of the vibration patterns for
different operating conditions. Some conclusions are discussed with regard to unique
characteristics of rub-induced rotor response, initial conditions, as well as appropriate ranges of system parameters. Of special interest are the changes in the apparent nonlinearity of the system dynamics as rubs are induced at different rotor speeds. In particular, starting with 2nd order sub/superharmonics, which are symptomatic of quadratic nonlinearity, progressively higher order polynomial behavior is excited, i.e., cubic, giving rise to 3rd order sub/superharmonics. As the speed is transitioned between such apparent nonlinearities, chaotic like behavior is induced because of the lack of whole or rational tone tuning between the apparent system frequency and the external source noise. The cause of such behavior will be discussed in detail along with the results of several parametric studies. |
| format | Article |
| id | doaj-art-425c1faeff144d39bbd6eb9e3e55509a |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 1999-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-425c1faeff144d39bbd6eb9e3e55509a2025-02-03T05:58:06ZengWileyInternational Journal of Rotating Machinery1023-621X1999-01-015429530410.1155/S1023621X99000263The Dynamics of Rotor with RubbingJerzy T. Sawicki0Joe Padovan1Rabih Al-Khatib2Department of Mechanical Engineering, Cleveland State University, Cleveland, OH 44115-2425, USADepartment of Mechanical Engineering, University of Akron, Akron, OH 44325-3903, USADepartment of Mechanical Engineering, Cleveland State University, Cleveland, OH 44115-2425, USAThis paper presents the description of some phenomena associated with dynamic behavior of rotors interacting with stationary components. Numerical simulations show rotor vibration spectrum rich in subharmonic, quasi-periodic, and chaotic vibrations. The nonlinear calculation techniques are applied to demonstrate the changes of the vibration patterns for different operating conditions. Some conclusions are discussed with regard to unique characteristics of rub-induced rotor response, initial conditions, as well as appropriate ranges of system parameters. Of special interest are the changes in the apparent nonlinearity of the system dynamics as rubs are induced at different rotor speeds. In particular, starting with 2nd order sub/superharmonics, which are symptomatic of quadratic nonlinearity, progressively higher order polynomial behavior is excited, i.e., cubic, giving rise to 3rd order sub/superharmonics. As the speed is transitioned between such apparent nonlinearities, chaotic like behavior is induced because of the lack of whole or rational tone tuning between the apparent system frequency and the external source noise. The cause of such behavior will be discussed in detail along with the results of several parametric studies.http://dx.doi.org/10.1155/S1023621X99000263RotorVibrationChaosPoincaré mapBifurcation diagramRub impact. |
| spellingShingle | Jerzy T. Sawicki Joe Padovan Rabih Al-Khatib The Dynamics of Rotor with Rubbing International Journal of Rotating Machinery Rotor Vibration Chaos Poincaré map Bifurcation diagram Rub impact. |
| title | The Dynamics of Rotor with Rubbing |
| title_full | The Dynamics of Rotor with Rubbing |
| title_fullStr | The Dynamics of Rotor with Rubbing |
| title_full_unstemmed | The Dynamics of Rotor with Rubbing |
| title_short | The Dynamics of Rotor with Rubbing |
| title_sort | dynamics of rotor with rubbing |
| topic | Rotor Vibration Chaos Poincaré map Bifurcation diagram Rub impact. |
| url | http://dx.doi.org/10.1155/S1023621X99000263 |
| work_keys_str_mv | AT jerzytsawicki thedynamicsofrotorwithrubbing AT joepadovan thedynamicsofrotorwithrubbing AT rabihalkhatib thedynamicsofrotorwithrubbing AT jerzytsawicki dynamicsofrotorwithrubbing AT joepadovan dynamicsofrotorwithrubbing AT rabihalkhatib dynamicsofrotorwithrubbing |