A Brief History of Rotor Dynamics

1992 ◽  
pp. 1-10 ◽  
Author(s):  
A. D. Dimarogonas
Keyword(s):  
Rotor Dynamics ◽  
History Of

Usage of the Lund Rotordynamic Programs in the Analysis of Centrifugal Compressors

2003 ◽  
Author(s):  
Edmund A. Memmott
Keyword(s):  
Rotor Dynamics ◽  
Centrifugal Compressors ◽  
Acceptance Criterion ◽  
Trouble Shooting ◽  
Wide Acceptance ◽  
History Of ◽  
Audit Reports

This paper is intended to be a history of the usage of the Jorgen Lund rotordynamic programs in the analysis of centrifugal compressors from the perspective of the author’s experience in that industry. Application of the Lund tilt pad bearing, rotor response, and stability programs will be described. They will be seen to be the basis for an industry wide acceptance criterion for the rotor dynamics of centrifugal compressors. They are used in the required audit reports for new compressors, and in trouble shooting investigations on the rotordynamics of centrifugal compressors.

Usage of the Lund Rotordynamic Programs in the Analysis of Centrifugal Compressors

2003 ◽  
Vol 125 (4) ◽  
pp. 500-506 ◽  
Author(s):  
Edmund A. Memmott
Keyword(s):  
Rotor Dynamics ◽  
Centrifugal Compressors ◽  
Acceptance Criterion ◽  
Trouble Shooting ◽  
Wide Acceptance ◽  
History Of ◽  
Audit Reports

This paper is intended to be a history of the usage of the Jørgen Lund rotordynamic programs in the analysis of centrifugal compressors from the perspective of the author’s experience in that industry. Application of the Lund tilt pad bearing, rotor response, and stability programs will be described. They will be seen to be the basis for an industry wide acceptance criterion for the rotor dynamics of centrifugal compressors. They are used in the required audit reports for new compressors, and in trouble shooting investigations on the rotordynamics of centrifugal compressors.

scholarly journals Analysis of Rotor-to-Stator Rub in a Large Steam Turbogenerator

2007 ◽  
Vol 2007 ◽  
pp. 1-8 ◽  
Author(s):  
Paolo Pennacchi ◽  
Andrea Vania
Keyword(s):  
Cross Sections ◽  
Rotor Dynamics ◽  
Dynamical Behaviour ◽  
Diagnostic Strategy ◽  
Simple Test ◽  
Case Histories ◽  
Actual Case ◽  
Fault Severity ◽  
Jeffcott Rotor ◽  
History Of

Rotor-to-stator rub is a very common topic in rotor dynamics and several models have been proposed in the literature. Anyhow these models are often able to explain only the experimental dynamical behaviour of simple test rigs, which are deliberately reproducing a Jeffcott rotor. On the contrary case, histories related to real machines are seldom presented and analysed. The aim of this paper is to present an actual case history of a large turbogenerator unit that was subjected to partial arc rubs. The experimental results are shown and discussed along with the model-based diagnostic strategy employed to identify the fault severity and the location of the shaft cross-sections where the heaviest rubs occurred. Comparisons between experimental data and simulated vibrations caused by the identified fault are shown to validate the proposed methodology.

Sign in / Sign up

Export Citation Format

Share Document