A Simulation Analysis of the Modal Characteristics and Critical Speeds of a Turbine Rotor System

Lei Xue, Jing Liu, Xiaoyong Dang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The turbine rotor system (TRS) plays an important role in the high-speed power system. Its vibrations and noise can greatly affect the performance and service life of power system. To study the vibrations of TRS, a finite element (FE) model of TRS is established. The natural frequencies and critical speeds of rotor system are analyzed. The influences of bearing stiffness and support positions of different support ranges on the critical speeds are analyzed. Note that the critical speeds of TRS increase with the increment of the stiffness of bearing. The support positions of bearing #1 have the greatest influence on the critical speeds of TRS. The maximum difference of critical speeds is 916.1 rad/s. The support positions of bearing #4 have the least impact on the critical speeds of TRS. The maximum difference of critical speeds is 8.7 rad/s. The study can provide a reference for the structural design of the turbine rotor system.

Original languageEnglish
Title of host publicationProceedings of TEPEN 2022 - Efficiency and Performance Engineering Network
EditorsHao Zhang, Yongjian Ji, Tongtong Liu, Xiuquan Sun, Andrew David Ball
PublisherSpringer Science and Business Media B.V.
Pages234-244
Number of pages11
ISBN (Print)9783031261923
DOIs
StatePublished - 2023
EventInternational Conference of The Efficiency and Performance Engineering Network, TEPEN 2022 - Baotou, China
Duration: 18 Aug 202221 Aug 2022

Publication series

NameMechanisms and Machine Science
Volume129 MMS
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

ConferenceInternational Conference of The Efficiency and Performance Engineering Network, TEPEN 2022
Country/TerritoryChina
CityBaotou
Period18/08/2221/08/22

Keywords

  • Critical speed
  • Stiffness
  • Support positions
  • Turbine rotor system (TRS)

Fingerprint

Dive into the research topics of 'A Simulation Analysis of the Modal Characteristics and Critical Speeds of a Turbine Rotor System'. Together they form a unique fingerprint.

Cite this