Results 21 to 30 of about 293,620 (283)

Low adhesion detection and identification in a railway vehicle system using traction motor behaviour [PDF]

open access: yes
It is important to monitor the wheel-rail friction coefficient in railway vehicles to improve their traction and braking performance as well as to reduce the number of incidents caused by low friction. Model based fault detection and identification (FDI)
Zhao, Yunshi
core   +3 more sources

On the Scale Size of the Aerodynamic Characteristics of a High-Speed Train [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
In the wind tunnel test of trains, the scale size changes the Reynolds numbers of trains, which may affect the aerodynamic characteristics of the train.
C. Chang, T. Li, D. Qin, J. Zhang
doaj   +1 more source

Polygonisation of railway wheels: a critical review

open access: yesRailway Engineering Science, 2020
Polygonisation is a common nonuniform wear phenomenon occurring in railway vehicle wheels and has a severe impact on the vehicle–track system, ride comfort, and lineside residents.
Gongquan Tao   +3 more
doaj   +1 more source

Optimization on the Crosswind Stability of Trains Using Neural Network Surrogate Model

open access: yesChinese Journal of Mechanical Engineering, 2021
Under the influence of crosswinds, the running safety of trains will decrease sharply, so it is necessary to optimize the suspension parameters of trains.
Le Zhang   +3 more
doaj   +1 more source

Experimentally based numerical models and numerical simulation with parameter identification of human lumbar FSUs in traction [PDF]

open access: yes, 2004
Numerical simulation of the behaviour of human lumbar spine segments, moreover, parameter-identification of the component organs of human lumbar FSUs are presented in traction therapies, by using FEM analysis. First, a simple 2D model, than a refined 2D
Tornyos, A., Kurutzné Kovács, Márta
core   +1 more source

Experimental and numerical studies of a linear synchronous motor with the secondary made of coated superconductor

open access: yesCES Transactions on Electrical Machines and Systems, 2019
Thrust tests of a linear synchronous motor (LSM) with its secondary made of coated superconducting coils were conducted via the built prototype over the traditional copper windings.
Kang Liu   +6 more
doaj   +1 more source

Boundary controllability and source reconstruction in a viscoelastic string under external traction [PDF]

open access: yes, 2013
Treatises on vibrations devote large space to study the dynamical behavior of an elastic system subject to known external tractions since usually a ``system'' is part of a chain of mechanisms which disturb the ``system'' for example due to the periodic ...
Luciano Pandolfi, Pandolfi, Luciano
core   +1 more source

Damage Tolerance Assessment of a Brake Unit Bracket for High-Speed Railway Welded Bogie Frames

open access: yesChinese Journal of Mechanical Engineering, 2019
The brake unit bracket of a bogie frame is an important load-carrying component, particularly under emergency start/stop conditions. Conventional infinite/safe life approaches provide an over-conservative recommendation for the allowable strength and ...
Bing Yang   +3 more
doaj   +1 more source

Re-adhesion control for a railway single wheelset test rig based on the behaviour of the traction motor [PDF]

open access: yes, 2013
A method for detecting wheel slip/slide and re-adhesion control of AC traction motors in railway applications is presented in this paper. This enables a better utilisation of available adhesion and could also reduce wheel wear by reducing high creep ...
Liang, B.   +3 more
core   +1 more source

Tool Failure Analysis and Multi-Objective Optimization of a Cutting-Type Energy-Absorbing Structure for Subway Vehicles

open access: yesApplied Sciences, 2023
This paper aims to provide essential guidance for the crashworthiness design of cutting energy-absorbing structures for subway vehicles. By investigating tool failure with experiment and numerical approaches, a new energy-absorbing tube structure was ...
Qianchen Gao   +4 more
doaj   +1 more source

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