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Title: Development of a set of equations for incorporating disk flexibility effects in rotordynamic analyses

Abstract

Rotordynamic equations that account for disk flexibility are developed. These equations employ free-free rotor modes to model the rotor system. Only transverse vibrations of the disks are considered, with the shaft/disk system considered to be torsionally rigid. Second-order elastic foreshortening effects that couple with the rotor speed to produce first-order terms in the equations of motion are included. The approach developed in this study is readily adaptable for usage in many of the codes that are currently used in rotordynamic simulations. The equations are similar to those used in standard rigid disk analyses but with additional terms that include the effects of disk flexibility. An example case is presented to demonstrate the use of the equations and to show the influence of disk flexibility on the rotor dynamic behavior of a sample system.

Authors:
 [1];
  1. Auburn Univ., AL (United States)
Publication Date:
OSTI Identifier:
6359309
Resource Type:
Journal Article
Journal Name:
Journal of Engineering for Gas Turbines and Power; (United States)
Additional Journal Information:
Journal Volume: 115:2; Journal ID: ISSN 0742-4795
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; TURBOMACHINERY; PERFORMANCE; SYSTEMS ANALYSIS; AVAILABILITY; BEARINGS; CRITICAL VELOCITY; MATHEMATICAL MODELS; MECHANICAL SHAFTS; MECHANICAL VIBRATIONS; PARAMETRIC ANALYSIS; ROTORS; EQUIPMENT; MACHINE PARTS; MACHINERY; SHAFTS; VELOCITY; 200104* - Fossil-Fueled Power Plants- Components

Citation Formats

Flowers, G T, and Ryan, S G. Development of a set of equations for incorporating disk flexibility effects in rotordynamic analyses. United States: N. p., 1993. Web. doi:10.1115/1.2906698.
Flowers, G T, & Ryan, S G. Development of a set of equations for incorporating disk flexibility effects in rotordynamic analyses. United States. https://doi.org/10.1115/1.2906698
Flowers, G T, and Ryan, S G. 1993. "Development of a set of equations for incorporating disk flexibility effects in rotordynamic analyses". United States. https://doi.org/10.1115/1.2906698.
@article{osti_6359309,
title = {Development of a set of equations for incorporating disk flexibility effects in rotordynamic analyses},
author = {Flowers, G T and Ryan, S G},
abstractNote = {Rotordynamic equations that account for disk flexibility are developed. These equations employ free-free rotor modes to model the rotor system. Only transverse vibrations of the disks are considered, with the shaft/disk system considered to be torsionally rigid. Second-order elastic foreshortening effects that couple with the rotor speed to produce first-order terms in the equations of motion are included. The approach developed in this study is readily adaptable for usage in many of the codes that are currently used in rotordynamic simulations. The equations are similar to those used in standard rigid disk analyses but with additional terms that include the effects of disk flexibility. An example case is presented to demonstrate the use of the equations and to show the influence of disk flexibility on the rotor dynamic behavior of a sample system.},
doi = {10.1115/1.2906698},
url = {https://www.osti.gov/biblio/6359309}, journal = {Journal of Engineering for Gas Turbines and Power; (United States)},
issn = {0742-4795},
number = ,
volume = 115:2,
place = {United States},
year = {Thu Apr 01 00:00:00 EST 1993},
month = {Thu Apr 01 00:00:00 EST 1993}
}