Experimental and Theoretical Study of an Actively Lubricated LEG Tilting Pad Bearing

Alejandro Cerda Varela*, Ilmar Santos, Jorge González Salazar, Cristóbal Ponce Salazar

*Corresponding author for this work

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Abstract

This work presents theoretical and experimental results regarding the feasibility of introducing an active lubri-cation concept in tilting pad journal bearings (TPJBs) featuring the leading edge groove (LEG) lubrication system. The modification of the oil flow into each pad supply groove by means of servovalves renders the bearing active, due to the resulting alteration of the oil film pressure field. Experimental results obtained in a suitable test rig enables verification of the concept feasibility at the component level, considering a single tilting pad, load on pad configuration, supporting a rigid rotor. Secondly, theoretical results portray the application of this technology in a 5-pad, load between pad LEG TPJB, aimed at performing active control of vibrations in a flexible rotor setup. The proposed technology exhibits benefits in terms of the ability to excite system dynamics to perform in-situ identification experiments, as well as to reduce the rotor vibration amplitude.
Original languageEnglish
Title of host publicationProceedings of 13th SIRM: The 13th International Conference on Dynamics of Rotating Machinery
Place of PublicationKgs. Lyngby
PublisherTechnical University of Denmark
Publication date2019
Pages244-259
ISBN (Electronic)978-87-7475-568-5
Publication statusPublished - 2019
Event13th International Conference on Dynamics of Rotating Machinery - Technical University of Denmark, Copenhagen, Denmark
Duration: 13 Feb 201915 Feb 2019
Conference number: 13

Conference

Conference13th International Conference on Dynamics of Rotating Machinery
Number13
LocationTechnical University of Denmark
CountryDenmark
CityCopenhagen
Period13/02/201915/02/2019

Cite this

Cerda Varela, A., Santos, I., Salazar, J. G., & Salazar, C. P. (2019). Experimental and Theoretical Study of an Actively Lubricated LEG Tilting Pad Bearing. In Proceedings of 13th SIRM: The 13th International Conference on Dynamics of Rotating Machinery (pp. 244-259). Kgs. Lyngby: Technical University of Denmark.