A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress

It is rather difficult for engineers to apply many of the fatigue damage models for requiring a knee point, material-dependent coefficient, or extensive testing, and some of them are only validated by a fatigue test of two-stage loading rather than higher-stage loading. In this paper, we propose a n...

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Autores principales:	Lu Zhang, Jie Jin, Wei Zhou, Wen-Liang Li, Meng Qiao
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/d0cea4806e05445185e02601fd7f7007
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spelling	oai:doaj.org-article:d0cea4806e05445185e02601fd7f70072021-11-22T01:10:25ZA Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress2314-491210.1155/2021/5581307https://doaj.org/article/d0cea4806e05445185e02601fd7f70072021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/5581307https://doaj.org/toc/2314-4912It is rather difficult for engineers to apply many of the fatigue damage models for requiring a knee point, material-dependent coefficient, or extensive testing, and some of them are only validated by a fatigue test of two-stage loading rather than higher-stage loading. In this paper, we propose a new model of fatigue cumulative damage in variable amplitude loading, which just requires the information of the S-N curve determined from the fatigue experiment. Specifically, the proposed model defines a stress equivalent transformation way to translate the damage of one stress to another stress through simple calculation. Experimental data of fatigue including two-, three-, and four-block loading verify the superiority of the proposed model by comparing it with the Miner model and Manson model. The results show that the proposed model can be generalized to any type of loading and presents a better prediction. Therefore, the advantage of the proposed model can be easily used by an engineer.Lu ZhangJie JinWei ZhouWen-Liang LiMeng QiaoHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENJournal of Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Lu Zhang Jie Jin Wei Zhou Wen-Liang Li Meng Qiao A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
description	It is rather difficult for engineers to apply many of the fatigue damage models for requiring a knee point, material-dependent coefficient, or extensive testing, and some of them are only validated by a fatigue test of two-stage loading rather than higher-stage loading. In this paper, we propose a new model of fatigue cumulative damage in variable amplitude loading, which just requires the information of the S-N curve determined from the fatigue experiment. Specifically, the proposed model defines a stress equivalent transformation way to translate the damage of one stress to another stress through simple calculation. Experimental data of fatigue including two-, three-, and four-block loading verify the superiority of the proposed model by comparing it with the Miner model and Manson model. The results show that the proposed model can be generalized to any type of loading and presents a better prediction. Therefore, the advantage of the proposed model can be easily used by an engineer.
format	article
author	Lu Zhang Jie Jin Wei Zhou Wen-Liang Li Meng Qiao
author_facet	Lu Zhang Jie Jin Wei Zhou Wen-Liang Li Meng Qiao
author_sort	Lu Zhang
title	A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
title_short	A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
title_full	A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
title_fullStr	A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
title_full_unstemmed	A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress
title_sort	nonlinear fatigue damage model based on equivalent transformation of stress
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/d0cea4806e05445185e02601fd7f7007
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A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress

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