Investigation of train safety domain in cross wind in respect of attitude change

Cui, Tao; Zhang, Weihua; Sun, Bangcheng

doi:10.1016/j.jweia.2014.04.006

Cited by 23 publications

(16 citation statements)

References 20 publications

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“…Till now, contributions have been made from: infrastructure (Duan et al, 2011;Yang and Shi, 2014), traction system (Chang, 2014), operation strategy (Lu et al, 2011), aerodynamics (Li et al, 2011;Yu et al, 2013;Cui et al, 2014), etc. On a recent trip from Hangzhou to Beijing, the first author was astonished by the excellent ride quality of Chinese trains operating at speeds over 300 km/h, and by the passenger service and comfort matching anything offered in other regions of the world.…”

Section: Development Of High Speed In Chinamentioning

confidence: 99%

Background of recent developments of passenger railways in China, the UK and other European countries

Smith

Zhou

2014

JZUS-A

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This paper, based on a lecture given during tour undertaken in May 2014 of key railway establishments in China, consists of a brief introduction to the history and comparisons of railways in the UK and China, a description of rail speed-up in the last few decades in the UK, and notes of current high speed trains. Similar brief details are given of high speed in Europe. Brief mention is made of comparative railway safety. The development of high speed rail in China is discussed and the UK High Speed development plan is briefly introduced. The paper concluded that high speed train system has tremendous advantages in increasing the efficiency and convenience of transport without adding to carbon generation.

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Section: Development Of High Speed In Chinamentioning

confidence: 99%

Background of recent developments of passenger railways in China, the UK and other European countries

Smith

Zhou

2014

JZUS-A

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“…In the analysis of the fluid-solid interaction, the mesh of the computational domain in the simulation must be adjusted to reflect the operating conditions of the train, and thus the dynamic mesh technology is necessary. 9 As indicated in equation (1), which represents the dynamics of the ith vehicle in a train, the acting force F oi f g can be divided into a superposition of an aerodynamic force F ai f g, rail-wheel force F wi f g and other types of resistance F ri f g that may need to be taken into account for the model. For multiple-rigid-body modelling, the aerodynamic force exerted on the centre of gravity of the vehicle is taken as the combined force and torque as Figure 5.…”

Section: Modelling Of the Fluid-solid Couplingmentioning

confidence: 99%

The development of China’s high-speed railway systems and a study of the dynamics of coupled systems in high-speed trains

Zhang

2013

Proceedings of the Institution of Mechanical Engineers, Part F:

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This paper reports on the development of high-speed railway systems in China. In addition, with respect to the characteristics of the high-speed train system, the relationship between various coupled systems that can affect train operation are analysed, including interactions between two vehicles, between a track and train, a pantograph/catenary and train, and airflow and a train. On the basis of this research, problems pertaining to the dynamics arising from high-speed operations are studied and the necessity for a study of the system dynamics of high-speed trains-considering all these interactions-is discussed. A theoretic framework for the analysis of the dynamics generated by coupled systems in highspeed trains is presented and the modelling methods for these coupled systems are outlined.

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“…The results showed that there are some differences in the vehicle lane and the yaw angles and also demonstrated the importance of the transient aerodynamic force in the vehicle’s motion. Cui et al 17 studied the safety domain of a train in the crosswind condition with respect to the change in the attitude of the train and found that the safety domain decreased when the attitude of the train was considered. Zhou and Chen 18 used the fully coupled method to investigate the vehicle–bridge–crosswind system, but the driver’s reaction was not considered, which may severely affect the flow field and the driving stability.…”

Section: Introductionmentioning

confidence: 99%

Transient aerodynamics simulations of a road vehicle in the crosswind condition coupled with the vehicle’s motion

Huang

Feng

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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The influence of transient aerodynamics on a vehicle in a crosswind and the effect on the vehicle’s motion are investigated by employing fully coupled simulations. The fully coupled method makes the simulation data on the fluid dynamics and on the vehicle dynamics exchange in time. LES are used to investigate the movement of the transient turbulence, and wind tunnel experiments are carried out to validate the numerical method. The vehicle is simplified as a three-degree-of-freedom system which moves in only the horizontal direction. The driver’s reaction is considered when the motion of the vehicle is simulated. The results of fully coupled simulations show that the transient aerodynamic loads have a marked influence on the motion of the vehicle. The transitional method of one-way coupled simulations is also employed to obtain data. The simulation results for the two methods are compared with each other. It is found that there is large difference between the results of the two methods. The maximum side force in fully coupled simulations is about 1.22 times the value obtained by the transitional method, and there is a 0.2 m discrepancy between the peak value of the lateral displacement in fully coupled simulations and the peak value in the transitional method. The results show that the transient aerodynamic loads induced by the unsteady motion of the vehicle have a larger effect on the vehicle’s motion than do the aerodynamic loads from the transitional method. Furthermore, the results also reflect the significance of estimating the transient aerodynamic loads in simulations of the vehicle’s motion.

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Investigation of train safety domain in cross wind in respect of attitude change

Cited by 23 publications

References 20 publications

Background of recent developments of passenger railways in China, the UK and other European countries

Background of recent developments of passenger railways in China, the UK and other European countries

The development of China’s high-speed railway systems and a study of the dynamics of coupled systems in high-speed trains

Transient aerodynamics simulations of a road vehicle in the crosswind condition coupled with the vehicle’s motion

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