Results 81 to 90 of about 1,461,299 (208)

Effects of rail vehicle dynamics modelling choices on machine learning analysis

Rail inclination is a well-known important track design parameter. It may have a measurable influence on the running dynamic behaviour of railway vehicles, as it affects equivalent conicity.
Shahidzadeh Arabani, Sina, Licciardello, Riccardo, Kaviani, Nadia   +2 more
core   +1 more source

Cause Analysis and Optimization of Subway Vehicles Lateral Stability Exceedance

Chengshi guidao jiaotong yanjiu
ObjectiveRail profile wear and wheel condition degradation during subway operation can lead to changes in the wheel-rail contact relationship, then resulting in obvious abnormal vehicle sway. This not only compromises ride comfort but also poses a latent
Qingwei SONG, Xuying WANG, Zhongsan JIANG, Chunlai LI, Yangcheng LU, Xianpeng NIE   +5 more
doaj   +1 more source

In-service Performance of Metro Vehicle Bogies Based on Line-tracking Tests

Chengshi guidao jiaotong yanjiu
[Objective] With the continuous development of urban rail transit and the ongoing expansion of metro lines, the service environment for metro vehicle bogies is becoming increasingly complex.
YANG Liqiang, YANG Chen, LI Longtao
doaj   +1 more source

Equivalent Conicity and Curve Radius Influence on Dynamical Performance of Unconventional Bogies. Comparison Analysis [PDF]

, 2004
In this paper the dynamic behaviour of several unconventional bogies is compared. The study takes into account the radius of the curve and the maximum level of wear allowed to the wheels.
Santamaría Manrique, Javier, García Vadillo, Ernesto   +1 more
core  

Analysis and Remediation Strategies for Rail Profile-induced Train Hunting Instability in Rail Transit Turnout Area

Chengshi guidao jiaotong yanjiu
[Objective] Causes for train hunting instability in rail transit turnout areas are complex, usually related to turnout irregularity, vehicle state, wheel-rail relationship and other factors, seriously affecting driving comfort and threaten driving safety.
CHEN Dalei
doaj   +1 more source

Differences in Wheel Service Performance of Vehicles With Internal and External Axleboxes Considering Wheel-Axle Bending

IEEE Access
Based on the relative position of the axlebox to the wheel, rail vehicles can be categorized into vehicles with internal axleboxes and those with external axleboxes. This study investigates the bending patterns of axles under different loading conditions
Tao Guo, Bingzhi Chen, Xu Zhang, Yi Zeng, Shuai Han   +4 more
doaj   +1 more source

A new index of abdominal adiposity as an indicator of risk for cardiovascular disease. A cross-population study.

, 1993
A new index of abdominal adiposity, the conicity index, and the waist-to-hip ratio (WHR) were compared as health indicators in seven European populations and two USA populations. The total sample included 1280 men and 960 women.
Weiss, K.M., Seidell, J.C., Seidell, J. C., Ahn, Y I, Valdez, R., Seidell, J. C.; id_orcid, Valdez, R, Ahn, Y.I., Weiss, K M   +8 more
core  

Wheel-rail interaction and damage in switches and crossings

, 2012
Dynamic interaction between a railway freight vehicle and a track switch is studied by simulations of vehicle dynamics. In particular, the influence of a stochastic spread (scatter) in traffic parameters on damage in the switch is assessed.
Pålsson, Björn, Nielsen, Jens C. O., Nielsen, Jens, Jens C.O. Nielsen, Pålsson, Björn,, Björn A. Pålsson, P\ue5lsson, Bj\uf6rn, Nielsen, Jens,   +7 more
core   +1 more source

Re-investigation on effect of equivalent diameter of the conical nozzle on cluster size

AIP Advances
Based on the Hagena scaling law, the cluster size in a gas jet is dependent on the equivalent diameter of a conical nozzle. In this work, the effect of the equivalent diameter deq of a conical nozzle on cluster size is separated into the individual effects of the throat diameter d and the half-opening angle α by comparing the Rayleigh scattering ...
Yang Yang, Zebin Zuo, Guanglong Chen, Yunjiu Cao   +3 more
openaire   +2 more sources

Fault detection and isolation method for vehicle running instability from vehicle dynamics response using machine learning

, 2019
In this paper, a Fault Detection and Isolation (FDI) method is proposed for monitoring the vehicle running stability in a high-speed railway bogie. The objective is to detect and isolate the different faults of bogie components which are critical to ...
Qazizadeh, Alireza,, Stichel, Sebastian,, Berg, Mats,, Kulkarni, Rohan,   +3 more
core