Rotor Vibration Caused by External Excitation and Rub,

Abstract

For turbomachinery with low natural frequencies, considerations have been recently required for rotor vibrations caused by external forces except unbalance one, such as foundation motion, seismic wave, rub and so forth. Such a forced vibration is investigated analytically and experimentally in the present paper. Vibrations in a rotor-bearing system under a harmonic excitation are analyzed by the modal technique in the case of a linear system including gyroscopic effect. For a nonlinear system a new and powerful quasi-modal technique is developed and applied to the vibration caused by rub.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1982
Accession Number
ADP000353

Entities

People

  • Katsuaki Kikuchi
  • Makio Kaga
  • Michiyuki Takagi
  • Osami Matsushita

Tags

DTIC Thesaurus Topics

  • Doppler Effect
  • Excitation
  • Frequency
  • Frequency Shift
  • Instability
  • Linear Systems
  • Mechanical Waves
  • Motion
  • Nonlinear Systems
  • Resonant Frequency
  • Seismic Waves
  • Turbomachinery
  • Vibration
  • Waves

Fields of Study

  • Engineering
  • Physics

Readers

  • Control Systems Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).