scholarly journals Dynamic characteristics of high-speed railway vehicle with axle box bearing faults

2019 ◽  
Vol 563 ◽  
pp. 032023
Author(s):  
Ma Xinna ◽  
Liu Jingwei ◽  
Shi Wenrui
Keyword(s):  
Dynamic Characteristics ◽  
High Speed ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Bearing Faults

scholarly journals Research on Bogie Frame Lateral Instability of High-Speed Railway Vehicle

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Chen Wang ◽  
Shihui Luo ◽  
Ziqiang Xu ◽  
Chang Gao ◽  
Weihua Ma
Keyword(s):  
High Speed ◽  
Dynamics Simulation ◽  
Lateral Acceleration ◽  
Railway Vehicle ◽  
Lateral Instability ◽  
Bogie Frame ◽  
High Speed Railway ◽  
Long Time ◽  
Line Test ◽  
Equivalent Conicity

In order to find out the reason for the bogie frame instability alarm in the high-speed railway vehicle, the influence of wheel tread profile of the unstable vehicle was investigated. By means of wheel-rail contact analysis and dynamics simulation, the effect of tread wear on the bogie frame lateral stability was studied. The result indicates that the concave wear of tread is gradually aggravated with the increase of operation mileage; meanwhile the wheel-rail equivalent conicity also increases. For the rail which has not been grinded for a long time, the wear of gauge corner and wide-worn zone is relatively severe; the matching equivalent conicity is 0.31-0.4 between the worn rail and the concave-worn-tread wheel set. The equivalent conicity between the grinded rail and the concave-worn tread is below 0.25; the equivalent conicities are always below 0.1 between the reprofiled wheel set and various rails. The result of the line test indicates that the lateral acceleration of bogie frame corresponding to the worn wheel-rail can reach 8.5m/s2, and the acceleration after the grinding is reduced below 4.5m/s2. By dynamics simulation, it turns out that the unreasonable wheel-rail matching relationship is the major cause of the bogie frame lateral alarm. With the tread-concave wear being aggravated, the equivalent conicity of wheel-rail matching constantly increases, which leads to the bogie frame lateral instability and then the frame instability alarm.

Modelling and evaluation of the hunting behaviour of a high-speed railway vehicle on curved track

2018 ◽  
Vol 233 (2) ◽  
pp. 220-236 ◽  
Author(s):  
Vivek Kumar ◽  
Vikas Rastogi ◽  
PM Pathak
Keyword(s):  
High Speed ◽  
Degrees Of Freedom ◽  
Critical Speed ◽  
Transportation Network ◽  
Graph Model ◽  
Railway Vehicle ◽  
Physical Damage ◽  
Creep Theory ◽  
High Speed Railway ◽  
Hunting Behaviour

Nowadays, rail transport is a very important part of the transportation network for any countries. The demand for high operational speed makes hunting a very common instability problem in railway vehicles. Hunting leads to discomfort and causes physical damage to carriage components, such as wheels, rails, etc. The causes of instability and derailment should be identified and eliminated at the designing stage of a train to ensure its safe operation. In most of the earlier studies on hunting behaviour, a simplified model with a lower degree of freedom were considered, which resulted in incorrect results in some instances. In this study, a complete bond graph model of a railway vehicle with 31 degrees of freedom is presented to determine the response of a high-speed railway vehicle. For this purpose, two wheel–rail contacts grounded on a flange contact and Kalker’s linear creep theory are implemented. The model is simulated to observe the effects of suspension elements on the vehicle’s critical hunting velocity. It is observed that the critical hunting speed is extremely sensitive to the primary longitudinal and lateral springs. Other primary and secondary springs and dampers also affect the critical speed to some extent. However, the critical hunting velocity is insensitive to vertical suspension elements for both the primary and secondary suspensions. Also, the critical speed is found to be inversely related to the conicity of the wheel.

scholarly journals Improved backward fatigue statistical inference to the high-speed railway vehicle components

2019 ◽  
Vol 22 ◽  
pp. 211-218
Author(s):  
S.C. Wu ◽  
C.H. Li ◽  
G.Z. Kang ◽  
L.Y. Xie ◽  
W.H. Zhang
Keyword(s):  
Statistical Inference ◽  
High Speed ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Vehicle Components

scholarly journals Effect of Multi-Objective Control on Ride Quality in High Speed Railway Vehicle

2016 ◽  
Vol 49 (3) ◽  
pp. 273-278 ◽  
Author(s):  
Semiha Türkay ◽  
Aslı Soyiç Leblebici
Keyword(s):  
High Speed ◽  
Ride Quality ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Multi Objective ◽  
Objective Control

Lifetime Evaluation of Rail Pads for High Speed Railway Vehicle

2017 ◽  
Vol 10 (1) ◽  
pp. 12-14
Author(s):  
Chang Su Woo ◽  
Hyun Sung Park
Keyword(s):  
High Speed ◽  
Railway Vehicle ◽  
High Speed Railway

3A23 Vibration analysis of high speed railway vehicle seat by multi-body dynamics(Customer Environment)

2015 ◽  
Vol 2015 (0) ◽  
pp. _3A23-1_-_3A23-12_
Author(s):  
Daiki Fukushima ◽  
Takayoshi Kamada ◽  
Ryohei Shimamune ◽  
Shinichi Hasegawa ◽  
Kousuke Ootaki
Keyword(s):  
Vibration Analysis ◽  
High Speed ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Body Dynamics ◽  
Multi Body ◽  
Vehicle Seat

3A22 Modelling of seated passenger on high speed railway vehicle by multi-body dynamics(Customer Environment)

2015 ◽  
Vol 2015 (0) ◽  
pp. _3A22-1_-_3A22-12_
Author(s):  
Kou HISANO ◽  
Takayoshi KAMADA ◽  
Ryohei SHIMAMUNE ◽  
Shinichi HASEGAWA ◽  
Kousuke OOTAKI
Keyword(s):  
High Speed ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Body Dynamics ◽  
Multi Body

1205 Study on design of the Seats for High Speed Railway Vehicle by using the Analytical Model of Vibration Characteristics

2009 ◽  
Vol 2009.18 (0) ◽  
pp. 109-112
Author(s):  
Yuta ICHIKURA ◽  
Masao NAGAI ◽  
Ryuzo HAYASHI ◽  
Ryohei SHIMAMUNE ◽  
Yoshitaka YASUI ◽  
...  
Keyword(s):  
Analytical Model ◽  
High Speed ◽  
Vibration Characteristics ◽  
Railway Vehicle ◽  
High Speed Railway
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