Rotor torsion vibrations in the presence of continuous stator contact

Nicholas Vlajic, Xianbo Liu, Hamad Karki, Balakumar Balachandran

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

The purpose of this study is to examine the torsion response of a rotor while in continuous contact with a stator for both forward synchronous whirling and backward dry-friction whirling. Experimentally obtained torsional strain data for both of these motions are presented, and the results indicate that the major contributions to the motions occur at the drive speed fd, twice the drive speed 2 fd and the first torsional natural frequency ft for forward whirling. During backward whirling, the dominant response occurs at the drive speed fd and the sum of the whirl speed plus the drive speed at fw + fd. A distributed-parameter model in combination with a force-interaction model is used to capture the qualitative aspects of the system response. Simulations with this model reveal that the torsional vibrations are excited by stick-slip forces while undergoing backward whirling. Numerical and experimental results also show that motion at the first torsion natural frequency is the dominant component during forward whirling.

Original languageEnglish (US)
Title of host publicationASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Pages785-794
Number of pages10
EditionPARTS A AND B
DOIs
StatePublished - 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: Nov 9 2012Nov 15 2012

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A AND B
Volume4

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Country/TerritoryUnited States
CityHouston, TX
Period11/9/1211/15/12

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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