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A study of friction microslip modelling for dynamic analysis of bladed discs with root joints

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posted on 2023-06-09, 14:10 authored by Junjie Chen, Chaoping Zang, Biao Zhou, Yevgen PetrovYevgen Petrov
In the machinery structures with joints the contact pressures at contact interfaces are usually high enough to ensure that the contacting components stay joined and the gross slip does not occur. Nevertheless, the small relative slip over parts of the contact interface, i.e. the micro-slip, contributes significantly to the vibration damping. In the high-fidelity analysis of practical bladed discs the macro-slip model cannot provide sufficient accuracy for the predictive analysis of the properties of the friction damping in the contact interfaces. In this article, numerical studies of micro-slip damping effects is performed using 2D and 3D models of blade root joints. Analysis of hysteresis loops is performed to assess the influence of modelling parameters: choice of reference points, mesh configurations and other physical parameters. The impact of physical parameters, such as the contact geometry, friction coefficient, contact stiffness and tangential and normal loading, on the friction damping are numerically examined. The numerical results demonstrate the possibilities of micro-slip prediction using finite element modelling and shows the micro-slip friction damping effects using simplified and realistic blade root models.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

ISSN

0954-4062

Publisher

SAGE Publications

Issue

8

Volume

233

Page range

2599-2614

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Dynamics, Control and Vehicle Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-07-16

First Open Access (FOA) Date

2018-07-16

First Compliant Deposit (FCD) Date

2018-07-15

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