Dynamic analysis of fretting-wear in friction contact interfaces

Loïc Salles, Laurent Blanc, Fabrice Thouverez, Alexander M. Gouskov

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Fretting wear is a very important phenomenon occurring in bladed disks. It causes the blades to be replaced in turbomachines during their life-cycle. Methods exist to predict fretting-wear in quasistatic analysis. However, they do not predict all the phenomena observed in blade attachments on real turbomachines. That is why this study assumes that dynamics plays a role in fretting-wear. This paper is devoted to the realistic modeling and calculation of fretting-wear and dynamical response of structures in unilateral contact with friction. Vibration and wear phenomena present very different scales both in time and space. Therefore the difficulty is in finding methods that enable one to solve the nonlinear problem with a good compromise between the approximations made about the dynamical aspects and those linked with fretting-wear issues. Here, phenomenological examples are studied. They involve a small number of degrees of freedom with a view to understanding the complex coupling between vibration and fretting-wear. This way, they will show the relative importance of parameters.

Original languageEnglish
Article number012503
JournalJournal of Engineering for Gas Turbines and Power
Volume132
Issue number1
DOIs
Publication statusPublished - Jan 2010
Externally publishedYes

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