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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-11-01
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| Series: | Chinese Journal of Mechanical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s10033-021-00628-6 |
| _version_ | 1818344433386520576 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-13T16:46:24Z |
| format | Article |
| id | doaj.art-786dfd8238444f78ad30a6c20cdb2359 |
| institution | Directory Open Access Journal |
| issn | 1000-9345 2192-8258 |
| language | English |
| last_indexed | 2024-12-13T16:46:24Z |
| publishDate | 2021-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Chinese Journal of Mechanical Engineering |
| spelling | doaj.art-786dfd8238444f78ad30a6c20cdb23592022-12-21T23:38:08ZengSpringerOpenChinese Journal of Mechanical Engineering1000-93452192-82582021-11-0134111110.1186/s10033-021-00628-6Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and ExperimentsWeiyuan Dou0Lele Zhang1Haifeng Chang2Haifeng Zhang3Changqing Liu4School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong UniversitySchool of Mechanical, Electronic and Control Engineering, Beijing Jiaotong UniversitySchool of Mechanical, Electronic and Control Engineering, Beijing Jiaotong UniversityCRRC Changchun Railway Vehicles Co., Ltd.CRRC Changchun Railway Vehicles Co., Ltd.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.https://doi.org/10.1186/s10033-021-00628-6High-speed trainCast aluminum beamFatigue testStress concentrationFatigue strength reduction factor |
| spellingShingle | 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 Chinese Journal of Mechanical Engineering High-speed train Cast aluminum beam Fatigue test Stress concentration Fatigue strength reduction factor |
| title | 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_short | 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 |
| topic | High-speed train Cast aluminum beam Fatigue test Stress concentration Fatigue strength reduction factor |
| url | https://doi.org/10.1186/s10033-021-00628-6 |
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