Dynamic analysis of fretting-wear in joint interface by a multiscale harmonic balance method coupled with explicit or implicit integration schemes

Löic Salles, Alexander M. Gouskov, Laurent Blanc, Fabrice Thouverez, Pierrick Jean

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

7 Citations (Scopus)

Abstract

Assembled bladed disks have many contact interfaces (blade-disk joint, blade shrouds, friction damper, etc). Because of relative displacements at these interfaces, fretting-wear can occur, which shortens the life expectancy of the structure. Moreover, vibrations that occur in bladed-disks can increase this fretting-wear phenomenon. Two previous papers in Turboexpo have introduced a numerical method based on the Dynamical Lagrangian Frequency Time algorithm (DLFT) to calculate worn geometry, especially wear of bladed-disks' dovetail roots. Numerical investigations have illustrated the performances of this method and shown the coupling between dynamical and tribological phenomena. The basic idea of the DLFT-with-wear method is to separate time in two scales, slow scale for tribological phenomena and fast scale for dynamics. In the present paper, implicit and explicit integration schemes on the slow time scale are compared. An ad hoc prediction-correction method is used in both methods to accelerate the convergence of the non-linear solver. Numerical experiments on bladed-disk show that the implicit scheme is more appropriate to deal with fretting-wear under dynamical loading.

Original languageEnglish
Title of host publicationASME Turbo Expo 2010
Subtitle of host publicationPower for Land, Sea, and Air, GT 2010
Pages1003-1013
Number of pages11
EditionPARTS A AND B
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventASME Turbo Expo 2010: Power for Land, Sea, and Air, GT 2010 - Glasgow, United Kingdom
Duration: 14 Jun 201018 Jun 2010

Publication series

NameProceedings of the ASME Turbo Expo
NumberPARTS A AND B
Volume6

Conference

ConferenceASME Turbo Expo 2010: Power for Land, Sea, and Air, GT 2010
Country/TerritoryUnited Kingdom
CityGlasgow
Period14/06/1018/06/10

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