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A platform for research: civil engineering, architecture and urbanism
Aerodynamic performance and dynamic response of high-speed trains passing by each other on cable-stayed bridge under crosswind
https://orcid.org/0000-0002-5055-4947
Abstract High-speed trains (HSTs) passing by each other on cable-stayed bridges (CSBs) generated aerodynamic forces that significantly reduced the operational safety and stability of the trains. This study conducted a systematic analysis of the process through the co-simulation of Computational Fluid Dynamics (CFD) and Multi-Body Dynamics (MBD). First, a CFD model was established to analyze the flow field and aerodynamic forces of HSTs passing by each other on the CSB, based on the overset grid technology. Then, a finite element model for the CSB-track was established to obtain the deformation of the rail under winds. Finally, the MBD model was established and the time series of aerodynamic forces were applied to the HSTs, allowing for the analysis of the dynamic response. The results were as follows: when HSTs passed by each other on the CSB, there was a noticeable alteration in the distribution of air pressure on trains. The aerodynamic force variations of each vehicle on the windward side were greater than those on the leeward side. The safety and stability of each vehicle were decreasing, with the head vehicles having the lowest safety. As the crosswind speed increased, the dynamic response of trains was significantly heightened.
Highlights The Computational Fluid Dynamics model for high-speed trains on the cable-stayed bridge was established. The Multi-body Dynamics model was established based on rigid-flexible coupling method. The flow field of the high-speed trains and the cable-stayed bridge was analyzed. The dynamic response of the high-speed trains passing each other on the cable-stayed bridge was revealed.
Aerodynamic performance and dynamic response of high-speed trains passing by each other on cable-stayed bridge under crosswind
https://orcid.org/0000-0002-5055-4947
Abstract High-speed trains (HSTs) passing by each other on cable-stayed bridges (CSBs) generated aerodynamic forces that significantly reduced the operational safety and stability of the trains. This study conducted a systematic analysis of the process through the co-simulation of Computational Fluid Dynamics (CFD) and Multi-Body Dynamics (MBD). First, a CFD model was established to analyze the flow field and aerodynamic forces of HSTs passing by each other on the CSB, based on the overset grid technology. Then, a finite element model for the CSB-track was established to obtain the deformation of the rail under winds. Finally, the MBD model was established and the time series of aerodynamic forces were applied to the HSTs, allowing for the analysis of the dynamic response. The results were as follows: when HSTs passed by each other on the CSB, there was a noticeable alteration in the distribution of air pressure on trains. The aerodynamic force variations of each vehicle on the windward side were greater than those on the leeward side. The safety and stability of each vehicle were decreasing, with the head vehicles having the lowest safety. As the crosswind speed increased, the dynamic response of trains was significantly heightened.
Highlights The Computational Fluid Dynamics model for high-speed trains on the cable-stayed bridge was established. The Multi-body Dynamics model was established based on rigid-flexible coupling method. The flow field of the high-speed trains and the cable-stayed bridge was analyzed. The dynamic response of the high-speed trains passing each other on the cable-stayed bridge was revealed.
Aerodynamic performance and dynamic response of high-speed trains passing by each other on cable-stayed bridge under crosswind
https://orcid.org/0000-0002-5055-4947
Abstract High-speed trains (HSTs) passing by each other on cable-stayed bridges (CSBs) generated aerodynamic forces that significantly reduced the operational safety and stability of the trains. This study conducted a systematic analysis of the process through the co-simulation of Computational Fluid Dynamics (CFD) and Multi-Body Dynamics (MBD). First, a CFD model was established to analyze the flow field and aerodynamic forces of HSTs passing by each other on the CSB, based on the overset grid technology. Then, a finite element model for the CSB-track was established to obtain the deformation of the rail under winds. Finally, the MBD model was established and the time series of aerodynamic forces were applied to the HSTs, allowing for the analysis of the dynamic response. The results were as follows: when HSTs passed by each other on the CSB, there was a noticeable alteration in the distribution of air pressure on trains. The aerodynamic force variations of each vehicle on the windward side were greater than those on the leeward side. The safety and stability of each vehicle were decreasing, with the head vehicles having the lowest safety. As the crosswind speed increased, the dynamic response of trains was significantly heightened.
Highlights The Computational Fluid Dynamics model for high-speed trains on the cable-stayed bridge was established. The Multi-body Dynamics model was established based on rigid-flexible coupling method. The flow field of the high-speed trains and the cable-stayed bridge was analyzed. The dynamic response of the high-speed trains passing each other on the cable-stayed bridge was revealed.
Aerodynamic performance and dynamic response of high-speed trains passing by each other on cable-stayed bridge under crosswind
Zhang, Qian (author) / Cai, Xiaopei (author) / Wang, Tao (author) / Zhang, Yanrong (author) / Wang, Changchang (author)
2024-03-06
Article (Journal)
Electronic Resource
English
| British Library Conference Proceedings | 2011