Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation
The prediction of additional stresses in ballasted track due to subgrade deformation is the main objective of the present paper. In this context, a 2D finite element model of ballasted railway track was built using the ANSYS Workbench program. Based on this model, an investigation of stresses and de...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/18/8501 |
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| author | Ahmed Nabil Ramadan Peng Jing Jinxi Zhang Haytham Nour EL-Din Zohny |
| author_facet | Ahmed Nabil Ramadan Peng Jing Jinxi Zhang Haytham Nour EL-Din Zohny |
| author_sort | Ahmed Nabil Ramadan |
| collection | DOAJ |
| description | The prediction of additional stresses in ballasted track due to subgrade deformation is the main objective of the present paper. In this context, a 2D finite element model of ballasted railway track was built using the ANSYS Workbench program. Based on this model, an investigation of stresses and deformation values of track elements was conducted in three cases with different contact types. It was found that the case introducing the status of a new track, which has frictional contacts between sleepers and ballast with bonded contacts between other elements, has lower stresses in most of the track elements. Moreover, this case was applied for studying the effect of the settlement on track elements. It was found that stresses increased with increasing the settlement value. The average percentages of increased stresses are 4.18%, 5.85%, and 7.21% in railhead, tie plate, and sleeper, respectively, due to a 1 mm increase in the settlement. Finally, a second-degree polynomial equation was derived to predict the additional stresses in each element due to track settlement. It is expected that this study would help to decrease the maintenance costs and extend the service life of the track elements by predicting the additional stresses in them. |
| first_indexed | 2024-03-10T07:55:07Z |
| format | Article |
| id | doaj.art-675222019e0f476bb05b1fecb79ed5d7 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T07:55:07Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-675222019e0f476bb05b1fecb79ed5d72023-11-22T11:53:47ZengMDPI AGApplied Sciences2076-34172021-09-011118850110.3390/app11188501Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM SimulationAhmed Nabil Ramadan0Peng Jing1Jinxi Zhang2Haytham Nour EL-Din Zohny3College of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, ChinaCollege of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, ChinaCollege of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, ChinaPublic Works Department, Faculty of Engineering, Ain Shams University, Cairo 11566, EgyptThe prediction of additional stresses in ballasted track due to subgrade deformation is the main objective of the present paper. In this context, a 2D finite element model of ballasted railway track was built using the ANSYS Workbench program. Based on this model, an investigation of stresses and deformation values of track elements was conducted in three cases with different contact types. It was found that the case introducing the status of a new track, which has frictional contacts between sleepers and ballast with bonded contacts between other elements, has lower stresses in most of the track elements. Moreover, this case was applied for studying the effect of the settlement on track elements. It was found that stresses increased with increasing the settlement value. The average percentages of increased stresses are 4.18%, 5.85%, and 7.21% in railhead, tie plate, and sleeper, respectively, due to a 1 mm increase in the settlement. Finally, a second-degree polynomial equation was derived to predict the additional stresses in each element due to track settlement. It is expected that this study would help to decrease the maintenance costs and extend the service life of the track elements by predicting the additional stresses in them.https://www.mdpi.com/2076-3417/11/18/8501ballasted tracktrack elementsubgrade settlementadditional stressFEM |
| spellingShingle | Ahmed Nabil Ramadan Peng Jing Jinxi Zhang Haytham Nour EL-Din Zohny Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation Applied Sciences ballasted track track element subgrade settlement additional stress FEM |
| title | Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation |
| title_full | Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation |
| title_fullStr | Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation |
| title_full_unstemmed | Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation |
| title_short | Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation |
| title_sort | numerical analysis of additional stresses in railway track elements due to subgrade settlement using fem simulation |
| topic | ballasted track track element subgrade settlement additional stress FEM |
| url | https://www.mdpi.com/2076-3417/11/18/8501 |
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