Results 81 to 90 of about 7,227,198 (175)

Influence of Traction Force on Locomotive Wheel-Rail Relationship

机车电传动, 2019
In order to analyze the influence of locomotive traction force on wheel-rail relationship, a locomotive track coupling dynamics model based on 60 kg/m and 60N rail was established in SIMPACK multi-body dynamics software, and the horizontal track and ramp
Xiao WU, Junjun DING, Yunhua HUANG, Fu LI   +3 more
doaj  

Switch Rail Reduction Value Deviation’s Impact on Wheel–Rail Dynamic Interaction and Its Efficient Identification Method: A Numerical and Experimental Study

Applied Sciences
Railway turnout is a critical railway infrastructure that guides trains in switching tracks. Over time, uneven rail wear can lead to switch rail reduction value (SRRV) deviation, a typical structural defect that compromises turnout functionality and ...
Pu Wang, Qiantao Ma, Ji Liu, Jingmang Xu
doaj   +1 more source

A nonlinear vehicle-structure interaction methodology with wheel-rail detachment and reattachment [PDF]

, 2013
. A vehicle-structure interaction methodology with a nonlinear contact formulation based on contact and target elements has been developed. To solve the dynamic equations of motion, an incremental formulation has been used due to the nonlinear nature ...
Azevedo, A.F.M., Calcada, R., Neves, Sérgio, Montenegro, P. A.   +3 more
core   +2 more sources

Improving wheel load estimation performance of PQ monitoring bogie using lateral force measurements

Nihon Kikai Gakkai ronbunshu
Monitoring wheel-rail contact forces is essential for ensuring railway operational safety. The derailment coefficient, defined as the ratio of lateral force to wheel load, is a critical parameter for assessing the risk of flange climb derailment.
Yuzuki ENDO, Yohei MICHITSUJI, Itsuro ARAI, Masuhisa TANIMOTO   +3 more
doaj   +1 more source

Impact of Wheel Wear on Dynamics Performance of CR200J EMU Trailer and Control Cars

Chengshi guidao jiaotong yanjiu
Objective In response to stability alarm faults occurring in CR200J EMU trailer and control cars in certain sections, it is necessary to analyze the factors affecting the dynamics performance to analyze the causes and address the issues.
XU Li, YANG Chen, GU Zhonghua
doaj   +1 more source

The Two-Parameter Bifurcation and Evolution of Hunting Motion for a Bogie System

Applied Sciences
The complex service environment of railway vehicles leads to changes in the wheel–rail adhesion coefficient, and the decrease in critical speed may lead to hunting instability.
Shijun Wang, Lin Ma, Lingyun Zhang
doaj   +1 more source

Solid Lubricants for the Wheel–Rail Interface: Practical Experience and Computational Estimation of Their Effects

Machines
This paper deals with solid lubricants for the wheel–rail interface; the topic is viewed from two different but complementary perspectives. By means of simulations, the potential contribution of these lubricants, applied for purposes of wheel flange ...
Tomáš Michálek, Petr Voltr, Stanislava Liberová, Jiří Šlapák   +3 more
doaj   +1 more source

Difference between running tests and laboratory experiments using twin-disc rolling machine regarding to wheel/rail tangential contact force characteristics

Nihon Kikai Gakkai ronbunshu
This paper describes a consideration of the difference in wheel/rail tangential contact force characteristics between in running tests and in laboratory experiments.
Daisuke YAMAMOTO
doaj   +1 more source

Design of optimized tread profile for high-speed EMUs

机车电传动
To address two significant issues in high-speed electric multiple units (EMU), i.e. degraded vehicle dynamic performance under existing wheel-rail interactions and increased wheel tread wear at elevated operating speeds, this paper proposes an optimized ...
SUN Weinan, CHI Maoru, XIE Yucheng, CAI Wubin, ZHANG Xiao, CHEN Yongfa   +5 more
doaj  

Impact of Wheel-rail Lubrication on Outer Rail Wear in Metro Small Radius Curved Segments

Chengshi guidao jiaotong yanjiu
[Objective] For metro lines with high proportion of small radius curved segments and severe rail wear, lubrication can alter wheel-rail contact area friction coefficient and in turn effectively reduce rail wear, thus it is necessary to study the ...
Xinwei LUO, Bin ZHANG, Longyang WANG, Qingsong FENG   +3 more
doaj   +1 more source