Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method
When trains pass through damaged switch rails, rail head damage will change wheel–rail contact states from rolling frictions to unsteady contacts, which will result in impact vibrations and threaten structural safeties. In addition, under approaching and moving away rolling contact excitations and c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/18/6872 |
| _version_ | 1827656833813184512 |
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| author | Pan Hu Haitao Wang Chunlin Zhang Liang Hua Guiyun Tian |
| author_facet | Pan Hu Haitao Wang Chunlin Zhang Liang Hua Guiyun Tian |
| author_sort | Pan Hu |
| collection | DOAJ |
| description | When trains pass through damaged switch rails, rail head damage will change wheel–rail contact states from rolling frictions to unsteady contacts, which will result in impact vibrations and threaten structural safeties. In addition, under approaching and moving away rolling contact excitations and complex wheel–rail contacts, the non-stationary vibrations make it difficult to extract and analyze impact vibrations. In view of the above problems, this paper proposes a variational-mode-decomposition (VMD)-spectral-subtraction (SS)-based impact vibration extraction method. Firstly, the time domain feature analysis method is applied to calculate the time moments that the wheels pass joints, and to correct vehicle velocities. This can help estimate and confine impact vibration distribution ranges. Then, the stationary intrinsic mode function (IMF) components of the impact vibration are decomposed and analyzed with the VMD method. Finally, impact vibrations are further filtered with the SS method. For rail head damage with different dimensions, under different velocity experiments, the frequency and amplitude features of the impact vibrations are analyzed. Experimental results show that, in low-velocity scenarios, the proposed VMD–SS–based method can extract impact vibrations, the frequency features are mainly concentrated in 3500–5000 Hz, and the frequency and peak-to-peak features increase with the increase in excitation velocities. |
| first_indexed | 2024-03-09T22:34:51Z |
| format | Article |
| id | doaj.art-74f3f69e74f348af91af3f0284fd1213 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T22:34:51Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-74f3f69e74f348af91af3f0284fd12132023-11-23T18:50:39ZengMDPI AGSensors1424-82202022-09-012218687210.3390/s22186872Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS MethodPan Hu0Haitao Wang1Chunlin Zhang2Liang Hua3Guiyun Tian4School of Electrical Engineering, Nantong University, Nantong 226019, ChinaCollege of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, ChinaCOSCO SHIPPING shipyard (Nantong) Co., Ltd., Nantong 226019, ChinaSchool of Electrical Engineering, Nantong University, Nantong 226019, ChinaCollege of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, ChinaWhen trains pass through damaged switch rails, rail head damage will change wheel–rail contact states from rolling frictions to unsteady contacts, which will result in impact vibrations and threaten structural safeties. In addition, under approaching and moving away rolling contact excitations and complex wheel–rail contacts, the non-stationary vibrations make it difficult to extract and analyze impact vibrations. In view of the above problems, this paper proposes a variational-mode-decomposition (VMD)-spectral-subtraction (SS)-based impact vibration extraction method. Firstly, the time domain feature analysis method is applied to calculate the time moments that the wheels pass joints, and to correct vehicle velocities. This can help estimate and confine impact vibration distribution ranges. Then, the stationary intrinsic mode function (IMF) components of the impact vibration are decomposed and analyzed with the VMD method. Finally, impact vibrations are further filtered with the SS method. For rail head damage with different dimensions, under different velocity experiments, the frequency and amplitude features of the impact vibrations are analyzed. Experimental results show that, in low-velocity scenarios, the proposed VMD–SS–based method can extract impact vibrations, the frequency features are mainly concentrated in 3500–5000 Hz, and the frequency and peak-to-peak features increase with the increase in excitation velocities.https://www.mdpi.com/1424-8220/22/18/6872impact vibration analysisVMDSSvelocity effectwheel—rail contact |
| spellingShingle | Pan Hu Haitao Wang Chunlin Zhang Liang Hua Guiyun Tian Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method Sensors impact vibration analysis VMD SS velocity effect wheel—rail contact |
| title | Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method |
| title_full | Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method |
| title_fullStr | Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method |
| title_full_unstemmed | Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method |
| title_short | Wheel-Rail Contact-Induced Impact Vibration Analysis for Switch Rails Based on the VMD-SS Method |
| title_sort | wheel rail contact induced impact vibration analysis for switch rails based on the vmd ss method |
| topic | impact vibration analysis VMD SS velocity effect wheel—rail contact |
| url | https://www.mdpi.com/1424-8220/22/18/6872 |
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