Effects of friction dampers on aerodynamically unstable rotor stages

Alok Sinha, J. H. Griffin

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

The physical concepts and mathematical techniques required to analyze and understand the effects of dry friction on aerodynamically unstable rotor stages have been developed. A lumped parameter model has been chosen for the rotor stage, and the viscous damping associated with each blade is taken to be negative. The following issues are addressed: the nature and amplitude of a stable steady-state response, the maximum transient amplitude for which a bounded response exists, and the maximum negative damping that can be stabilized. Results are presented for three-, four-, and five-bladed disks.

Original languageEnglish (US)
Pages (from-to)262-270
Number of pages9
JournalAIAA journal
Volume23
Issue number2
DOIs
StatePublished - Feb 1985

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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