Vibration analysis of the third rail structure of a mass rapid transit system with structural defects
The third rail is a critical piece of railway infrastructure that provides a continuous supply of electricity to power mass rapid transit trains. The vibration of the third rail may excite different resonant modes and affect its structural integrity and reliability by degrading the mechanical proper...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/153943 |
| _version_ | 1826121322620518400 |
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| author | Paudel, Milan Lim, Li Jie Yap, Fook Fah Kho, Kevin |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Paudel, Milan Lim, Li Jie Yap, Fook Fah Kho, Kevin |
| author_sort | Paudel, Milan |
| collection | NTU |
| description | The third rail is a critical piece of railway infrastructure that provides a continuous supply of electricity to power mass rapid transit trains. The vibration of the third rail may excite different resonant modes and affect its structural integrity and reliability by degrading the mechanical properties leading to the damaged or missing structural components. This paper examines vibrational characteristics of the third rail of Singapore Mass Rapid Transit system with damaged and missing structural components. Using the mathematical model, the first five, pin‐to‐pin modes of vibration and natural frequencies were identified and compared with modal and harmonic response obtained from ANSYS finite element models. A good agreement was observed between the analytical and numerical solutions. The study was further extended to study the sagging of the third rail due to structural failure and its impact on collector shoes. It was found that the structural defects could produce resonance modes below 5 Hz. In addition, the sagging and contact force on collector shoes increased by multiple folds when more than 2 claw structures are broken. The methods and the results presented in this article can be used as a tool for predictive maintenance by detecting possi-ble structural failure or defects. |
| first_indexed | 2024-10-01T05:30:47Z |
| format | Journal Article |
| id | ntu-10356/153943 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:30:47Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1539432022-01-11T08:03:40Z Vibration analysis of the third rail structure of a mass rapid transit system with structural defects Paudel, Milan Lim, Li Jie Yap, Fook Fah Kho, Kevin School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Third Rail Vibration Conductor Rail The third rail is a critical piece of railway infrastructure that provides a continuous supply of electricity to power mass rapid transit trains. The vibration of the third rail may excite different resonant modes and affect its structural integrity and reliability by degrading the mechanical properties leading to the damaged or missing structural components. This paper examines vibrational characteristics of the third rail of Singapore Mass Rapid Transit system with damaged and missing structural components. Using the mathematical model, the first five, pin‐to‐pin modes of vibration and natural frequencies were identified and compared with modal and harmonic response obtained from ANSYS finite element models. A good agreement was observed between the analytical and numerical solutions. The study was further extended to study the sagging of the third rail due to structural failure and its impact on collector shoes. It was found that the structural defects could produce resonance modes below 5 Hz. In addition, the sagging and contact force on collector shoes increased by multiple folds when more than 2 claw structures are broken. The methods and the results presented in this article can be used as a tool for predictive maintenance by detecting possi-ble structural failure or defects. Published version This research was funded by Singapore Mass Rapid Transit (SMRT), grant number: EIRRARP5 and research works were carried out at SMRT-NTU Urban Rail Corporate Laboratory, NTU Singapore. 2022-01-11T08:03:40Z 2022-01-11T08:03:40Z 2021 Journal Article Paudel, M., Lim, L. J., Yap, F. F. & Kho, K. (2021). Vibration analysis of the third rail structure of a mass rapid transit system with structural defects. Applied Sciences, 11(18), 8410-. https://dx.doi.org/10.3390/app11188410 2076-3417 https://hdl.handle.net/10356/153943 10.3390/app11188410 2-s2.0-85114666774 18 11 8410 en EIRRARP5 Applied Sciences © 2021 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Mechanical engineering Third Rail Vibration Conductor Rail Paudel, Milan Lim, Li Jie Yap, Fook Fah Kho, Kevin Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title | Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title_full | Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title_fullStr | Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title_full_unstemmed | Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title_short | Vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| title_sort | vibration analysis of the third rail structure of a mass rapid transit system with structural defects |
| topic | Engineering::Mechanical engineering Third Rail Vibration Conductor Rail |
| url | https://hdl.handle.net/10356/153943 |
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