LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION
Using the vibration excitation spectrum of IEC61373, the subway bogie obstacle detector was taken as the research object. The random vibration fatigue strength of the obstacle detector was studied by combining the finite element method and bench vibration test, and the remaining life at the fatigue...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.06.024 |
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| _version_ | 1841535982224015360 |
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| author | LI XiangJie YANG GuangWu XIAO ShouNe ZHU Tao YANG Bing |
| author_facet | LI XiangJie YANG GuangWu XIAO ShouNe ZHU Tao YANG Bing |
| author_sort | LI XiangJie |
| collection | DOAJ |
| description | Using the vibration excitation spectrum of IEC61373, the subway bogie obstacle detector was taken as the research object. The random vibration fatigue strength of the obstacle detector was studied by combining the finite element method and bench vibration test, and the remaining life at the fatigue weak points of the aluminum beam welded joints was predicted. Based on the frequency domain method, combined with Miner’s linear accumulation damaging theory, the simulation life results of the obstacle detector under acceleration excitation were obtained, then compared with the bench vibration testing results to verify the accuracy of the fatigue simulation analysis. Moreover, the sub-model boundary technique was used to separate the aluminum beam, and the stress spectrum of the fatigue weak points was equivalently converted. At last, the remaining life was predicted after inserting the initial cracks at the evaluation points. The result indicated also that it is reasonable to evaluate the remaining life of aluminum alloy welded joints with initial cracks based on fracture mechanics, which provides the certain reference for engineering applications. |
| format | Article |
| id | doaj-art-dfa4b73745084577b1ebf0b19f545f1b |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-dfa4b73745084577b1ebf0b19f545f1b2025-01-15T02:25:05ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-01431442144930612310LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATIONLI XiangJieYANG GuangWuXIAO ShouNeZHU TaoYANG BingUsing the vibration excitation spectrum of IEC61373, the subway bogie obstacle detector was taken as the research object. The random vibration fatigue strength of the obstacle detector was studied by combining the finite element method and bench vibration test, and the remaining life at the fatigue weak points of the aluminum beam welded joints was predicted. Based on the frequency domain method, combined with Miner’s linear accumulation damaging theory, the simulation life results of the obstacle detector under acceleration excitation were obtained, then compared with the bench vibration testing results to verify the accuracy of the fatigue simulation analysis. Moreover, the sub-model boundary technique was used to separate the aluminum beam, and the stress spectrum of the fatigue weak points was equivalently converted. At last, the remaining life was predicted after inserting the initial cracks at the evaluation points. The result indicated also that it is reasonable to evaluate the remaining life of aluminum alloy welded joints with initial cracks based on fracture mechanics, which provides the certain reference for engineering applications.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.06.024Metro obstacle detectorWelded jointsRandom vibrationFracture analysisLife prediction |
| spellingShingle | LI XiangJie YANG GuangWu XIAO ShouNe ZHU Tao YANG Bing LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION Jixie qiangdu Metro obstacle detector Welded joints Random vibration Fracture analysis Life prediction |
| title | LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION |
| title_full | LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION |
| title_fullStr | LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION |
| title_full_unstemmed | LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION |
| title_short | LIFE PREDICTION OF METRO OBSTACLE DETECTOR BASED ON FATIGUE TEST AND FRACTURE SIMULATION |
| title_sort | life prediction of metro obstacle detector based on fatigue test and fracture simulation |
| topic | Metro obstacle detector Welded joints Random vibration Fracture analysis Life prediction |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.06.024 |
| work_keys_str_mv | AT lixiangjie lifepredictionofmetroobstacledetectorbasedonfatiguetestandfracturesimulation AT yangguangwu lifepredictionofmetroobstacledetectorbasedonfatiguetestandfracturesimulation AT xiaoshoune lifepredictionofmetroobstacledetectorbasedonfatiguetestandfracturesimulation AT zhutao lifepredictionofmetroobstacledetectorbasedonfatiguetestandfracturesimulation AT yangbing lifepredictionofmetroobstacledetectorbasedonfatiguetestandfracturesimulation |