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Validation of test rig measurements and prediction tools for friction interface modelling
presentation
posted on 2023-06-08, 13:54 authored by C W Schwingshackl, Yevgen PetrovYevgen Petrov, D J EwinsThe modelling of friction contact interfaces in structural dynamics attracts much interest in the gas turbine industry. In order to obtain reliable predictions of typical friction interfaces, such as encountered in under platform dampers or blade roots, accurate characteristics of friction interfaces must be provided to the analysis. It must be ensured that a sufficient number of parameters are provided, characterising all aspects of the friction contact, that the values are measured accurately, and that the contact parameters are interpreted and used correctly in the numerical modelling of the contact interfaces. This investigation demonstrates that measured friction coefficient and tangential contact stiffness are sufficient to reproduce the experimental friction interface behaviour and that these two parameters can be measured reliably in the available test rig. In combination with fine nonlinear interface meshes and accurate contact pressure representations, the measured interface behaviour of stick, micro- and macroslip is reproduced with good accuracy. The capability of modelling the microslip behaviour for the contact interface by a multitude of friction contact elements is explored and the effect of the normal stress distribution over the contact area on the microslip is studied
History
Publication status
- Published
External DOI
Page range
1015-1024Presentation Type
- paper
Event name
ASME Turbo Expo 2010: Power for Land, Sea, and Air (GT2010)Event location
Glasgow, SCOTLANDEvent type
conferenceEvent date
Jun 14-18, 2010ISBN
978-0-7918-4401-4Department affiliated with
- Engineering and Design Publications
Notes
Volume 6: Structures and Dynamics, Parts A and B ISBN: 9780791844014Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-11-27Usage metrics
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