University of Sussex
Browse

File(s) not publicly available

Analytical formulation of friction interface elements for analysis of nonlinear multi-harmonic vibrations of bladed disks

journal contribution
posted on 2023-06-08, 13:54 authored by Yevgen PetrovYevgen Petrov, D J Ewins
An analytical formulation for the vectors of contact forces and the stiffness matrix of the nonlinear friction contact interface Is developed for the analysis of multi-harmonic vibrations in the frequency domain. The contact interface elements provided here an exact description of friction and unilateral contact forces at the interacting surfaces, taking into account the influence of the variable normal load on the friction forces, including the extreme cases of separation of the two surfaces. Initial gaps and interferences at the contact nodes, which affect the normal force, as well as the unilateral action of the normal force at the contact surface, are all included in the model. The accurate calculation of the force vector and the tangent stiffness matrix provides a very reliable and fast convergence of the iteration process used in the search for the amplitudes of nonlinear vibrations of bladed disks. Numerical investigations demonstrate excellent performance with respect to speed, accuracy and stability of computation

History

Publication status

  • Published

Journal

Journal of Turbomachinery

ISSN

0889-504X

Publisher

American Society of Mechanical Engineers

Issue

2

Volume

125

Page range

364-371

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-11-26

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC