Generic Friction Models for Time-Domain Vibration Analysis of Bladed Disks

EP Petrov, D Ewins

Research output: Contribution to journalArticle (Academic Journal)

71 Citations (Scopus)

Abstract

New efficient models have been developed to describe dynamic friction effects in order to facilitate analysis of the vibration of bladed disks in the time domain. These friction models describe friction forces occurring at contact interfaces under time-varying normal load variations, including cases of separation. The friction models developed allow one to take into account time-varying friction contact parameters, such as friction coefficient and contact stiffness coefficients. Anisotropy and variation of the friction characteristics over the contact surfaces are included in the proposed models. The capabilities of the new friction models are demonstrated. Analysis of the friction forces is performed for different motion trajectories and different time variations of the normal load, and the effects of anisotropy, variation in time of the friction characteristics and normal load variation are discussed. A numerical analysis of transient vibrations of shrouded blades using the new models is presented.
Translated title of the contributionGeneric Friction Models for Time-Domain Vibration Analysis of Bladed Disks
Original languageEnglish
Pages (from-to)184 - 192
Number of pages9
JournalJournal of Turbomachinery
Volume126 (1)
DOIs
Publication statusPublished - Jan 2004

Bibliographical note

Publisher: ASME American Society of Mechanical Engineers

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