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Experimental and modelling study of interaction between friction and galling under contact load change conditions

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Title: Experimental and modelling study of interaction between friction and galling under contact load change conditions
Authors: Yang, X
Hu, Y
Zhang, L
Politis, DJ
Liu, X
Wang, L
Item Type: Journal Article
Abstract: The galling process remains one of the least understood phenomena in metal forming. The transfer of material from a work-piece onto the tool surface can cause an evolutionary increase in COF and thus the use of a constant COF in FE simulations leads to progressively inaccurate results. For an aluminium work-piece, material transfer, which has history and pressure dependency, is determined by a dynamic balance between the generation and ejection of wear particles acting as a 'third body' abrasive element at the contact interface. To address this dynamic interactive phenomenon, pin-on-disc tests between AA6082 and G3500 were performed under step load change conditions. The COF evolutions, morphologies of the transfer layer and its cross-section were studied. It has been found that contact load change will disequilibrate and rebuild the dynamic balance and high load will increase the generation and ejection rate of third body and vice versa. Moreover, based on the experimental results, an interactive model was developed and presented to simulate the dynamic formation process of the aluminium third body layer under load change conditions, enabling multi-cycle simulations to model the galling distribution and friction variation.
Issue Date: 1-Mar-2022
Date of Acceptance: 27-May-2021
URI: http://hdl.handle.net/10044/1/90154
DOI: 10.1007/s40544-021-0531-3
ISSN: 2223-7690
Publisher: SpringerOpen
Start Page: 454
End Page: 472
Journal / Book Title: Friction
Volume: 10
Copyright Statement: © The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Sponsor/Funder: Heilongjiang Academy of Sciences Institute of Automation
Funder's Grant Number: Heilongjiang-Imperial-int manu
Publication Status: Published
Online Publication Date: 2021-07-09
Appears in Collections:Mechanical Engineering
Faculty of Engineering



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