Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments

Abstract The cast aluminum beam is a key structure for carrying the body-hung traction motor of a high-speed train; its fatigue property is fundamental for predicting the residual life and service mileage of the structure. To characterize the structural fatigue property, a finite element-based metho...

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Autores principales:	Weiyuan Dou, Lele Zhang, Haifeng Chang, Haifeng Zhang, Changqing Liu
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	High-speed train Cast aluminum beam Fatigue test Stress concentration Fatigue strength reduction factor Ocean engineering TC1501-1800 Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/786dfd8238444f78ad30a6c20cdb2359
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spelling	oai:doaj.org-article:786dfd8238444f78ad30a6c20cdb23592021-11-21T12:02:35ZFatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments10.1186/s10033-021-00628-61000-93452192-8258https://doaj.org/article/786dfd8238444f78ad30a6c20cdb23592021-11-01T00:00:00Zhttps://doi.org/10.1186/s10033-021-00628-6https://doaj.org/toc/1000-9345https://doaj.org/toc/2192-8258Abstract The cast aluminum beam is a key structure for carrying the body-hung traction motor of a high-speed train; its fatigue property is fundamental for predicting the residual life and service mileage of the structure. To characterize the structural fatigue property, a finite element-based method is developed to compute the stress concentration factor, which is used to obtain the structural fatigue strength reduction factors. A full-scale fatigue test on the cast aluminum beam is designed and implemented for up to ten million cycles, and the corresponding finite element model of the beam is validated using the measured data of the gauges. The results show that the maximum stress concentration occurs at the fillet of the supporting seat, where the structural fatigue strength reduction factor is 2.45 and the calculated fatigue limit is 35.4 MPa. Moreover, no surface cracks are detected using the liquid penetrant test. Both the experimental and simulation results indicate that the cast aluminum beam can satisfy the service life requirements under the designed loading conditions.Weiyuan DouLele ZhangHaifeng ChangHaifeng ZhangChangqing LiuSpringerOpenarticleHigh-speed trainCast aluminum beamFatigue testStress concentrationFatigue strength reduction factorOcean engineeringTC1501-1800Mechanical engineering and machineryTJ1-1570ENChinese Journal of Mechanical Engineering, Vol 34, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	High-speed train Cast aluminum beam Fatigue test Stress concentration Fatigue strength reduction factor Ocean engineering TC1501-1800 Mechanical engineering and machinery TJ1-1570
spellingShingle	High-speed train Cast aluminum beam Fatigue test Stress concentration Fatigue strength reduction factor Ocean engineering TC1501-1800 Mechanical engineering and machinery TJ1-1570 Weiyuan Dou Lele Zhang Haifeng Chang Haifeng Zhang Changqing Liu Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
description	Abstract The cast aluminum beam is a key structure for carrying the body-hung traction motor of a high-speed train; its fatigue property is fundamental for predicting the residual life and service mileage of the structure. To characterize the structural fatigue property, a finite element-based method is developed to compute the stress concentration factor, which is used to obtain the structural fatigue strength reduction factors. A full-scale fatigue test on the cast aluminum beam is designed and implemented for up to ten million cycles, and the corresponding finite element model of the beam is validated using the measured data of the gauges. The results show that the maximum stress concentration occurs at the fillet of the supporting seat, where the structural fatigue strength reduction factor is 2.45 and the calculated fatigue limit is 35.4 MPa. Moreover, no surface cracks are detected using the liquid penetrant test. Both the experimental and simulation results indicate that the cast aluminum beam can satisfy the service life requirements under the designed loading conditions.
format	article
author	Weiyuan Dou Lele Zhang Haifeng Chang Haifeng Zhang Changqing Liu
author_facet	Weiyuan Dou Lele Zhang Haifeng Chang Haifeng Zhang Changqing Liu
author_sort	Weiyuan Dou
title	Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
title_short	Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
title_full	Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
title_fullStr	Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
title_full_unstemmed	Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments
title_sort	fatigue characterization on a cast aluminum beam of a high-speed train through numerical simulation and experiments
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/786dfd8238444f78ad30a6c20cdb2359
work_keys_str_mv	AT weiyuandou fatiguecharacterizationonacastaluminumbeamofahighspeedtrainthroughnumericalsimulationandexperiments AT lelezhang fatiguecharacterizationonacastaluminumbeamofahighspeedtrainthroughnumericalsimulationandexperiments AT haifengchang fatiguecharacterizationonacastaluminumbeamofahighspeedtrainthroughnumericalsimulationandexperiments AT haifengzhang fatiguecharacterizationonacastaluminumbeamofahighspeedtrainthroughnumericalsimulationandexperiments AT changqingliu fatiguecharacterizationonacastaluminumbeamofahighspeedtrainthroughnumericalsimulationandexperiments
_version_	1718419313797365760

Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments

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