Shaft centre orbit for dynamically loaded radial bearings

Peder Klit, Anders Vølund

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Abstract

The aim of this work is to demonstrate how to utilize the bearings damping coefficients to estimate the orbit for a dynamically loaded journal bearing. The classical method for this analysis was developed by Booker in 1965 Booker1 and described further in 1972 Booker2. Several authors have refined this method over the years. In 1966 Jorgen W. Lund published an approach to find the dynamic coefficients of a journal bearing by a first order perturbation of the Reynold´s equation. These coefficients made it possible to perform a rotor-bearing stability analysis for a statically loaded bearing. In the mid seventies Jorgen W. Lund pointed out in lecture notes that the dynamic damping coefficients of the bearing could be used to find the shaft orbit for dynamically loaded bearings. For simplicity the "Short-Width-Journal-Bearing Theory" is used as a basis for finding the damping coefficients in this work, but the method is general and the damping coefficients could have been found also by numerical solutions.
Original languageEnglish
Title of host publicationThe 10th Nordic Symposium on Tribology - Nordtrib 2002
Publication date2002
Publication statusPublished - 2002
Event10th Nordic Symposium on Tribology: Nordtrib 2002 - Stockholm, Sweden
Duration: 9 Jun 200212 Jun 2002
Conference number: 10

Conference

Conference10th Nordic Symposium on Tribology
Number10
CountrySweden
CityStockholm
Period09/06/200212/06/2002

Cite this

Klit, P., & Vølund, A. (2002). Shaft centre orbit for dynamically loaded radial bearings. In The 10th Nordic Symposium on Tribology - Nordtrib 2002