Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The use of tilting-pad journal bearing (TPJB) has increased in the recent past due to their stability effects on the rotor bearing system. The first part of this paper presents a review of the state of the art work on rotor response when supported on TPJB. Only few published work presented results relating to the strongly nonlinear behavior, especially chaos, resulting from the use of these types of bearings. In the second part of this paper, three loading mechanisms capable of producing instabilities in terms of sub-harmonic and chaotic motions are suggested. The first one is that of a centrally loaded pad with small rotor unbalance excitations. The second one is when the load is applied between two pads. And, the third represents a concentric rotor (zero static load) acted upon by centering sprigs and unbalance excitation. After a quite extensive numerical experimentation, the resulting response shows, for certain parameters, sub-harmonic, quasi-periodic and chaotic motions.

Original languageEnglish (US)
Title of host publicationProceedings of the World Tribology Congress III - 2005
Pages145-146
Number of pages2
StatePublished - Dec 1 2005
Event2005 World Tribology Congress III - Washington, D.C., United States
Duration: Sep 12 2005Sep 16 2005

Publication series

NameProceedings of the World Tribology Congress III - 2005

Other

Other2005 World Tribology Congress III
CountryUnited States
CityWashington, D.C.
Period9/12/059/16/05

Fingerprint

Bearing pads
Journal bearings
Bearings (structural)
Rotors
Chaos theory

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Abu-Mahfouz, I. (2005). Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work. In Proceedings of the World Tribology Congress III - 2005 (pp. 145-146). (Proceedings of the World Tribology Congress III - 2005).
Abu-Mahfouz, Issam. / Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work. Proceedings of the World Tribology Congress III - 2005. 2005. pp. 145-146 (Proceedings of the World Tribology Congress III - 2005).
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abstract = "The use of tilting-pad journal bearing (TPJB) has increased in the recent past due to their stability effects on the rotor bearing system. The first part of this paper presents a review of the state of the art work on rotor response when supported on TPJB. Only few published work presented results relating to the strongly nonlinear behavior, especially chaos, resulting from the use of these types of bearings. In the second part of this paper, three loading mechanisms capable of producing instabilities in terms of sub-harmonic and chaotic motions are suggested. The first one is that of a centrally loaded pad with small rotor unbalance excitations. The second one is when the load is applied between two pads. And, the third represents a concentric rotor (zero static load) acted upon by centering sprigs and unbalance excitation. After a quite extensive numerical experimentation, the resulting response shows, for certain parameters, sub-harmonic, quasi-periodic and chaotic motions.",
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Abu-Mahfouz, I 2005, Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work. in Proceedings of the World Tribology Congress III - 2005. Proceedings of the World Tribology Congress III - 2005, pp. 145-146, 2005 World Tribology Congress III, Washington, D.C., United States, 9/12/05.

Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work. / Abu-Mahfouz, Issam.

Proceedings of the World Tribology Congress III - 2005. 2005. p. 145-146 (Proceedings of the World Tribology Congress III - 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abu-Mahfouz I. Chaotic dynamics of rotor supported on tilting-pad journal bearing (TPJB); A review and current work. In Proceedings of the World Tribology Congress III - 2005. 2005. p. 145-146. (Proceedings of the World Tribology Congress III - 2005).