University of Sussex
Browse

File(s) not publicly available

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 Ewins
The 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

Page range

1015-1024

Presentation Type

  • paper

Event name

ASME Turbo Expo 2010: Power for Land, Sea, and Air (GT2010)

Event location

Glasgow, SCOTLAND

Event type

conference

Event date

Jun 14-18, 2010

ISBN

978-0-7918-4401-4

Department affiliated with

  • Engineering and Design Publications

Notes

Volume 6: Structures and Dynamics, Parts A and B ISBN: 9780791844014

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-11-27

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Exports