Investigation on dynamic characteristics of a rod fastening rotor-bearing coupling system with fixed-point rubbing



Yang, Yang, Ouyang, Huajiang ORCID: 0000-0003-0312-0326, Zeng, Jin, Ma, Hui, Yang, Yiren and Cao, Dengqing
(2022) Investigation on dynamic characteristics of a rod fastening rotor-bearing coupling system with fixed-point rubbing. APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, 43 (7). pp. 1063-1080.

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Abstract

<jats:title>Abstract</jats:title><jats:p>The aim of this paper is to gain insight into the nonlinear vibration feature of a dynamic model of a gas turbine. First, a rod fastening rotor-bearing coupling model with fixed-point rubbing is proposed, where the fractal theory and the finite element method are utilized. For contact analysis, a novel contact force model is introduced in this paper. Meanwhile, the Coulomb model is adopted to expound the friction characteristics. Second, the governing equations of motion of the rotor system are numerically solved, and the nonlinear dynamic characteristics are analyzed in terms of the bifurcation diagram, Poincaré map, and time history. Third, the potential effects provided by contact degree of joint interface, distribution position, and amount of contact layer are discussed in detail. Finally, the contrast analysis between the integral rotor and the rod fastening rotor is conducted under the condition of fixed-point rubbing.</jats:p>

Item Type: Article
Uncontrolled Keywords: rod fastening rotor, joint interface, fixed-point rubbing, nonlinear dynamic characteristic, O322
Divisions: Faculty of Science and Engineering > School of Engineering
Depositing User: Symplectic Admin
Date Deposited: 12 May 2022 10:38
Last Modified: 18 Jan 2023 21:03
DOI: 10.1007/s10483-022-2819-7
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3154651