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A meshless computational framework for a modified dynamic system of vehicle coupled with plate structure
,
Han Zhao,
Peng Zhang,
Xiaonan Xie,
Adesola Ademiloye ,
Ping Xiang
Engineering Structures, Volume: 312, Start page: 118140
Swansea University Author:
Adesola Ademiloye
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DOI (Published version): 10.1016/j.engstruct.2024.118140
Abstract
In previous simulations of train-bridge interaction systems (TBIS), the supporting system for the train are commonly treated as beam structures, leading to less accurate results, particularly for small-span cases. To address this limitation, a modified vertical TBIS is proposed. In the presented TBI...
| Published in: | Engineering Structures |
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| ISSN: | 0141-0296 |
| Published: |
Elsevier BV
2024
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa66322 |
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| Abstract: |
In previous simulations of train-bridge interaction systems (TBIS), the supporting system for the train are commonly treated as beam structures, leading to less accurate results, particularly for small-span cases. To address this limitation, a modified vertical TBIS is proposed. In the presented TBIS, the supporting system is considered as a Reissner-Mindlin plate, and the displacement field is described by first-order shear deformation theory (FSDT). To establish the model, radial point interpolation method(RPIM), a meshless method, is employed. Finally, a coupled dynamic equation is established to calculate various responses of the system. Several numerical examples are presented to illustrate the disparities between the system based on plate model and traditional beam model. The results indicate that the beam model yields higher estimates of the mid-span vertical displacement of the bridge, while the peak of the mid-span vertical acceleration is smaller compared to the plate model; additionally, it is observed that the carbody is primarily influenced by rail irregularities. Consequently, the proposed plate model offers distinct advantages over the beam model in providing comprehensive structural response information, thereby offering novel insights into bridge design and analysis. Additionally, this marks the inaugural application of themeshless method in the field of TBIS, which further extends the application scope of meshless methods. |
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| Keywords: |
Train–bridge interaction system; Meshless method; Computational plate-shell mechanics; High-speed railway; Rail irregularity |
| College: |
Faculty of Science and Engineering |
| Funders: |
This work was funded by the 2023 Hunan Province Transportation Science and Technology Progress and Innovation Project (202305) and the Henan Province Science and Technology Key Research Project (242102521034). |
| Start Page: |
118140 |