Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

The effective strain criterion, unifying multimode and multiaxial loadings to a single parameter and being expressed in analytical form with no need to rotate a plane to search the maximum damage parameter, is proposed for the fatigue design of anti-vibration components. The validation procedure was...

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Autor principal:	Robert Keqi Luo
Formato:	article
Lenguaje:	EN
Publicado:	Budapest University of Technology 2022
Materias:	rubber fatigue modeling and simulation damage mechanism effective strain Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/83312bdfe6254226ab1968eb9efcfff0
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spelling	oai:doaj.org-article:83312bdfe6254226ab1968eb9efcfff02021-12-01T09:25:39ZEffective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases1788-618X10.3144/expresspolymlett.2022.11https://doaj.org/article/83312bdfe6254226ab1968eb9efcfff02022-02-01T00:00:00Zhttp://www.expresspolymlett.com/letolt.php?file=EPL-0011528&mi=cdhttps://doaj.org/toc/1788-618XThe effective strain criterion, unifying multimode and multiaxial loadings to a single parameter and being expressed in analytical form with no need to rotate a plane to search the maximum damage parameter, is proposed for the fatigue design of anti-vibration components. The validation procedure was performed on 90 cases in two aspects: fatigue damage and crack orientation. All predicted fatigue cracks were located at the places where the effective strain reached its maximum and was consistent with the experimental observations. The failure planes predicted correlated with the experimental measurement. The S–N curve covered over 102 to 2.4·106 cycles and achieved high accuracy with the scatter-band of 1.8. The proposed approach was applied to two non-proportional loading cases (one in a phase angle 45° and the other in a phase angle 90°). The results seemed to indicate the suitability of the approach for the non-proportional loading calculations. It would be possible to combine the proposed approach with the critical plane method in non-proportional loadings: using the proposed approach to find the critical loading range and then using the critical plane method to determine the maximum values of the required damage variables. Both the proposed concept and the obtained S–N curve would be beneficial in rubber fatigue design. More engineering cases may be needed to verify this approach further.Robert Keqi LuoBudapest University of Technology articlerubberfatiguemodeling and simulationdamage mechanismeffective strainMaterials of engineering and construction. Mechanics of materialsTA401-492Chemical technologyTP1-1185ENeXPRESS Polymer Letters, Vol 16, Iss 2, Pp 130-141 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	rubber fatigue modeling and simulation damage mechanism effective strain Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
spellingShingle	rubber fatigue modeling and simulation damage mechanism effective strain Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185 Robert Keqi Luo Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
description	The effective strain criterion, unifying multimode and multiaxial loadings to a single parameter and being expressed in analytical form with no need to rotate a plane to search the maximum damage parameter, is proposed for the fatigue design of anti-vibration components. The validation procedure was performed on 90 cases in two aspects: fatigue damage and crack orientation. All predicted fatigue cracks were located at the places where the effective strain reached its maximum and was consistent with the experimental observations. The failure planes predicted correlated with the experimental measurement. The S–N curve covered over 102 to 2.4·106 cycles and achieved high accuracy with the scatter-band of 1.8. The proposed approach was applied to two non-proportional loading cases (one in a phase angle 45° and the other in a phase angle 90°). The results seemed to indicate the suitability of the approach for the non-proportional loading calculations. It would be possible to combine the proposed approach with the critical plane method in non-proportional loadings: using the proposed approach to find the critical loading range and then using the critical plane method to determine the maximum values of the required damage variables. Both the proposed concept and the obtained S–N curve would be beneficial in rubber fatigue design. More engineering cases may be needed to verify this approach further.
format	article
author	Robert Keqi Luo
author_facet	Robert Keqi Luo
author_sort	Robert Keqi Luo
title	Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
title_short	Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
title_full	Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
title_fullStr	Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
title_full_unstemmed	Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases
title_sort	effective strain criterion under multimode and multiaxial loadings – a rubber s–n curve with the scatter-band factor of 1.6 from 90 fatigue cases
publisher	Budapest University of Technology
publishDate	2022
url	https://doaj.org/article/83312bdfe6254226ab1968eb9efcfff0
work_keys_str_mv	AT robertkeqiluo effectivestraincriterionundermultimodeandmultiaxialloadingsarubbersncurvewiththescatterbandfactorof16from90fatiguecases
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Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

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