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A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics

Fretting wear is a common phenomenon that happens between contact parts when there is an oscillatory relative movement. To investigate wear characteristics history in the fretting process, the finite element method (FEM) is commonly applied to simulate the fretting by considering the wear in the mod...

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Detalles Bibliográficos
Autores principales: Wang, Shengjie, Wahab, Magd Abdel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068001/
https://www.ncbi.nlm.nih.gov/pubmed/33917650
http://dx.doi.org/10.3390/ma14081840
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author Wang, Shengjie
Wahab, Magd Abdel
author_facet Wang, Shengjie
Wahab, Magd Abdel
author_sort Wang, Shengjie
collection PubMed
description Fretting wear is a common phenomenon that happens between contact parts when there is an oscillatory relative movement. To investigate wear characteristics history in the fretting process, the finite element method (FEM) is commonly applied to simulate the fretting by considering the wear in the model. In most literature publications, the wear coefficient is considered as a constant, which is not a real case based on the experimental results. To consider the variation of wear coefficient, a double-linear model is applied in this paper, and the tribologically transformed structure (TTS) phase is considered in the study of the wear coefficient variation model. By using these models for variable wear coefficient for both flat and cylinder, the difference of wear characteristics, plastic strain, and stress between variable wear coefficient model (VWCM) and constant wear coefficient model (CWCM) are analyzed. The results show that the variable wear coefficient has no significant effect on the wear characteristic at the end of the process in the gross sliding regime. However, in the partial slip regime, the effect of variable wear coefficient on wear characteristics is significant. Due to the difference in contact geometry in the fretting process between VWCM and CWCM, the tangential and shear stress and equivalent plastic strain also show differences during the fretting process.
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spelling pubmed-80680012021-04-25 A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics Wang, Shengjie Wahab, Magd Abdel Materials (Basel) Article Fretting wear is a common phenomenon that happens between contact parts when there is an oscillatory relative movement. To investigate wear characteristics history in the fretting process, the finite element method (FEM) is commonly applied to simulate the fretting by considering the wear in the model. In most literature publications, the wear coefficient is considered as a constant, which is not a real case based on the experimental results. To consider the variation of wear coefficient, a double-linear model is applied in this paper, and the tribologically transformed structure (TTS) phase is considered in the study of the wear coefficient variation model. By using these models for variable wear coefficient for both flat and cylinder, the difference of wear characteristics, plastic strain, and stress between variable wear coefficient model (VWCM) and constant wear coefficient model (CWCM) are analyzed. The results show that the variable wear coefficient has no significant effect on the wear characteristic at the end of the process in the gross sliding regime. However, in the partial slip regime, the effect of variable wear coefficient on wear characteristics is significant. Due to the difference in contact geometry in the fretting process between VWCM and CWCM, the tangential and shear stress and equivalent plastic strain also show differences during the fretting process. MDPI 2021-04-08 /pmc/articles/PMC8068001/ /pubmed/33917650 http://dx.doi.org/10.3390/ma14081840 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Shengjie
Wahab, Magd Abdel
A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title_full A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title_fullStr A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title_full_unstemmed A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title_short A Numerical Study on the Effect of Variable Wear Coefficient on Fretting Wear Characteristics
title_sort numerical study on the effect of variable wear coefficient on fretting wear characteristics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068001/
https://www.ncbi.nlm.nih.gov/pubmed/33917650
http://dx.doi.org/10.3390/ma14081840
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