Abstract: This paper presents measurements of vertical and horizontal distortions of a compressor frame during the days following a cold start. The distortions are measured using a laser beam directed ...

Abstract: This paper presents an initial study of rub-induced thermal bow vibration during acceleration or deceleration of a steam turbine rotor. Previous studies of the subject have been limited to ...

Abstract: An analysis, based on the narrow groove theory, is presented for the closed, spiral-grooved spool bearing. Designs optimized for static stiffness are obtained for range of values of the groove ...

Abstract: Application of the narrow groove theory to spiral groove bearings of any rotationally symmetric geometry is described. An effective method for numerical solution of the governing equation to ...

Abstract: This paper presents a basis for determining the bending flexibility of flanged joints in complex piping systems for use in predicting natural frequencies, mode shapes, and response to excitation ...

Abstract: An experimental evaluation of a gas turbine/compressor train yielded excellent correlation between measured and predicted torsional critical speeds. Torsional strain signals acquired at a coupling ...

Abstract: The least desirable feature of most flexible rotor balancing procedures is the considerable number of trial mass runs required. This is of particular importance in the balancing of machines ...

Abstract: This paper presents the results of a program of analysis and tests to determine the dynamic, properties of elastomers as a function of strain and ambient temperature. Measurements were also ...