Li, Zilin, Ouyang, Huajiang ORCID: 0000-0003-0312-0326, Gu, Yuantong, Martelli, Saulo, Yang, Shiyu, Wei, Hongtao, Wang, Wei and Wei, Ron-Han
(2023)
Non-stationary friction-induced vibration with multiple contact points.
Nonlinear Dynamics, 111 (11).
pp. 9889-9917.
Text
ND submission 2023 final.docx - Author Accepted Manuscript Download (11MB) |
Abstract
Modelling and simulating of the friction-induced vibration of a multi-point contact system are widely encountered and challenging problems. Non-smooth transitions between stick and slip and between contact and separation (during vibration) at each contact point can happen simultaneously in practice, which should be considered together in a theoretical model. This work is innovative in that it addresses the comprehensive dynamic analysis of a multi-point contact system considering the two types of complex non-smooth behaviour at the interface as well as mode-coupling instability, which has not been studied in previous research on multi-point contact dynamics, to the authors' best knowledge. To deal with this complex situation, a new mix-level time iteration scheme for the simulations of the non-smooth/discontinuous system with elastic contact and friction is formulated. This is an essential step as it provides a generic and effective approach that can be used for different systems with the same contact features regardless of the internal structural configurations of the systems. Interesting results and discoveries through a detailed dynamic analysis of a 10-DoF system with two sliders are reported: (1) the mass and mass ratio between the components linked with the contact interface are the essential factors of mode-coupling instability and mode-veering phenomenon through the stability analysis. These findings serve to guide the subsequent transient analysis, which is much more time-consuming and would otherwise be costly to use for revealing the roles of these masses; (2) the individual contributions of non-smoothness and mode-coupling instability, and the critical influences of the contact states, the normal compression force, and the belt speed on the vibration frequency and non-stationary vibration range of the components in the system are clarified from the complex dynamic behaviour.
Item Type: | Article |
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Uncontrolled Keywords: | Friction-induced vibration, Linear complementary problem, Mode-coupling, Stick-slip, Loss of contact |
Divisions: | Faculty of Science and Engineering > School of Engineering |
Depositing User: | Symplectic Admin |
Date Deposited: | 28 Mar 2023 07:58 |
Last Modified: | 11 Mar 2024 02:30 |
DOI: | 10.1007/s11071-023-08321-0 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3169270 |