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Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load

Due to the increase in working hours, the reliability of rubber O-ring seals used in hydraulic systems of transfer machines will change. While traditional methods can only analyze one of the material properties or seal properties, the failure of the O-ring is caused by these two factors together. In...

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Detalles Bibliográficos
Autores principales: Liao, Baopeng, Sun, Bo, Yan, Meichen, Ren, Yi, Zhang, Weifang, Zhou, Kun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5667017/
https://www.ncbi.nlm.nih.gov/pubmed/29053597
http://dx.doi.org/10.3390/ma10101211
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author Liao, Baopeng
Sun, Bo
Yan, Meichen
Ren, Yi
Zhang, Weifang
Zhou, Kun
author_facet Liao, Baopeng
Sun, Bo
Yan, Meichen
Ren, Yi
Zhang, Weifang
Zhou, Kun
author_sort Liao, Baopeng
collection PubMed
description Due to the increase in working hours, the reliability of rubber O-ring seals used in hydraulic systems of transfer machines will change. While traditional methods can only analyze one of the material properties or seal properties, the failure of the O-ring is caused by these two factors together. In this paper, two factors are mainly analyzed: the degradation of material properties and load randomization by processing technology. Firstly, the two factors are defined in terms of material failure and seal failure, before the experimental methods of rubber materials are studied. Following this, the time-variant material properties through experiments and load distribution by monitoring the processing can be obtained. Thirdly, compressive stress and contact stress have been calculated, which was combined with the reliability model to acquire the time-variant reliability for the O-ring. Finally, the life prediction and effect of oil pressure were discussed, then compared with the actual situation. The results show a lifetime of 12 months for the O-ring calculated in this paper, and compared with the replacement records from the maintenance workshop, the result is credible.
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spelling pubmed-56670172017-11-09 Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load Liao, Baopeng Sun, Bo Yan, Meichen Ren, Yi Zhang, Weifang Zhou, Kun Materials (Basel) Article Due to the increase in working hours, the reliability of rubber O-ring seals used in hydraulic systems of transfer machines will change. While traditional methods can only analyze one of the material properties or seal properties, the failure of the O-ring is caused by these two factors together. In this paper, two factors are mainly analyzed: the degradation of material properties and load randomization by processing technology. Firstly, the two factors are defined in terms of material failure and seal failure, before the experimental methods of rubber materials are studied. Following this, the time-variant material properties through experiments and load distribution by monitoring the processing can be obtained. Thirdly, compressive stress and contact stress have been calculated, which was combined with the reliability model to acquire the time-variant reliability for the O-ring. Finally, the life prediction and effect of oil pressure were discussed, then compared with the actual situation. The results show a lifetime of 12 months for the O-ring calculated in this paper, and compared with the replacement records from the maintenance workshop, the result is credible. MDPI 2017-10-20 /pmc/articles/PMC5667017/ /pubmed/29053597 http://dx.doi.org/10.3390/ma10101211 Text en © 2017 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liao, Baopeng
Sun, Bo
Yan, Meichen
Ren, Yi
Zhang, Weifang
Zhou, Kun
Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title_full Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title_fullStr Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title_full_unstemmed Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title_short Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
title_sort time-variant reliability analysis for rubber o-ring seal considering both material degradation and random load
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5667017/
https://www.ncbi.nlm.nih.gov/pubmed/29053597
http://dx.doi.org/10.3390/ma10101211
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