Active vibration reduction in a light weight high speed train bogie

2D boundary element method in time domain is used to investigate the screening effectiveness of open trenches on reducing vibration generated by a high speed train in this study. The parameter used in the study is the configurations of the trench. In order to evaluate the screening effectiveness of a wave barrier, a reduction of dB value is defined and used in this study. The maximum reduction of dB values is about 25 dB when an open trench is used as a wave barrier. The depth of open trench is a main influential parameter of screening effectiveness. The deeper the open trench, the better vibration reduction. The screening effectiveness increases slightly due to the increase of trench width. Current study facilitates the basics for the optimum configuration of the open trench as the wave barrier for reducing vibration.

Download Full-text

Casting and Characterization of the Light-Weight Aluminum Alloys for Interior and Exterior Parts of High Speed Train

Journal of the Korean Society of Mechanical Technology ◽

10.17958/ksmt.20.1.201802.12 ◽

2018 ◽

Vol 20 (1) ◽

pp. 12-17 ◽

Cited By ~ 2

Author(s):

김기주 ◽

WON SI TAE

Keyword(s):

Aluminum Alloys ◽

High Speed ◽

Light Weight ◽

High Speed Train

Download Full-text

Active vibration control for high speed train bogies

Smart Materials and Structures ◽

10.1088/0964-1726/14/1/001 ◽

2004 ◽

Vol 14 (1) ◽

pp. 1-18 ◽

Cited By ~ 21

Author(s):

Alexander Peiffer ◽

Stefan Storm ◽

Arno Röder ◽

Rudolf Maier ◽

Paul-Gerhard Frank

Keyword(s):

Vibration Control ◽

High Speed ◽

Active Vibration Control ◽

High Speed Train ◽

Active Vibration

Download Full-text

Sensitivity Analysis of the Rectangular Trenches Employed in Suppression of the High-Speed Train-Induced Ground Vibrations

ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 5 ◽

10.1115/esda2010-24624 ◽

2010 ◽

Cited By ~ 2

Author(s):

Davood Younesian ◽

Mehran Sadri

Keyword(s):

High Speed ◽

Vibration Reduction ◽

Moving Loads ◽

High Speed Train ◽

Ground Vibrations ◽

Infinite Domain ◽

Aspect Ratios ◽

Different Types ◽

High Speed Trains ◽

Train Speed

Ground vibrations generated by high-speed trains are studied in this paper. Open trenches are included in modeling and the problem is formulated using elasticity theory. The ground is modeled by a semi-infinite domain and the embankment with finite layers and the high-speed train is simulated by moving loads. The analytical solution is obtained in frequency domain and the peak particle velocity (PPT) is then achieved for different types of open trenches with different aspect ratios and distance from the track centerline. A parametric study is then carried out and effects of different parameters including the train speed and ground properties on vibration reduction factors are investigated.

Download Full-text

Influence of Vehicle Number on the Dynamic Characteristics of High-Speed Train-CRTS III Slab Track-Subgrade Coupled System

Materials ◽

10.3390/ma14133662 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3662

Author(s):

Qingyuan Xu ◽

Hao Sun ◽

Lexuan Wang ◽

Lei Xu ◽

Wei Chen ◽

...

Keyword(s):

High Speed ◽

Vibration Reduction ◽

Coupled System ◽

Dynamic Responses ◽

High Speed Train ◽

Slab Track ◽

Track Dynamics ◽

Concrete Base ◽

Bending Stresses ◽

Negative Bending

In this paper, a high-speed train–CRTS III slab track–subgrade coupled dynamic model is established. With the model, the influence of vehicle number on the dynamic characteristics of a train–CRTS III slab track–subgrade coupled system with smooth and random track irregularity conditions for conventional and vibration-reduction CRTS III slab tracks are theoretically studied and analyzed. Some conclusions are drawn from the results: (1) the largest dynamic responses of the coupled system for all items and cases are no longer changed when the vehicle number exceeds three, and three vehicles are adequate to guarantee the simulation precision to investigate the dynamic responses of the coupled system. (2) The acceleration of the car body has almost no relation with the vehicle number, and only one vehicle is needed to study the vehicle dynamics using the train–CRTS III slab track–subgrade coupled dynamic model. (3) For the conventional CRTS III slab track on a subgrade, the vehicle number has a negligible influence on the accelerations of the rail, slab, and concrete base, the positive and negative bending moments of the rail, the compressive force of the fastener, and the positive bending stress of slab, but it has a large influence on the tension force of the fastener, and the negative bending stresses of the slab and concrete base. Only one vehicle is needed to study track dynamics without considering the tension force of the fastener, the negative bending stresses of the slab and concrete base, otherwise, two or more vehicles are required. (4) For vibration reduction of the CRTS III slab track on a subgrade, the number of vehicles has some influence on the dynamic responses of all track components, and at least two vehicles are required to investigate the track dynamics.

Download Full-text

The Dynamic Behavior of High Speed Train Using Magnetorheological Technology on the Curve Track

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.782.210 ◽

2015 ◽

Vol 782 ◽

pp. 210-218

Author(s):

Hua Xia Deng ◽

Lai Jun Zhou ◽

Shi Yu Zhao ◽

Wei Hua Li ◽

Shuai Shuai Sun ◽

...

Keyword(s):

Vibration Control ◽

High Speed ◽

Passive Control ◽

Control Method ◽

Dynamic Performance ◽

Active Vibration Control ◽

High Speed Train ◽

Active Vibration ◽

Curve Track ◽

Turning Radius

The era of high speed railway has come and the most important issue of the high speed train is the safety, which is directly related to billions of families. One of the most serious threats to the safety of the high speed train is the vibration of train body at curve track, which may cause the train off the track. Semi-active vibration control method is a possible solution compared with active control method which has robust problem and passive control method which has efficiency issue. Magnetorheological technology is a typical semi-active vibration control method which has been widely used in the automobile, architectural construction and aerospace. The high speed train using magnetorheological technology has not been fully investigated especially for the dynamic performance at curve track. In this paper, a high-speed train model with MRF dampers is simulated by a combined ADAMS and MATLAB simulation. The dynamic performance of high speed train operating at different speeds and turning radius is investigated to reveal the mechanism of how the MRF damper affects the train’s stability and vibration. The results show that the semi-active suspension installed with MRF dampers substantially improves the stability and dynamic performance of the train at curve track.

Download Full-text