Influence of track gauge variation on rail vehicle dynamics (an examination based on comparison between data from a test train running on track with irregularity artificially set and numerical simulation)

Fujimoto, Hiroshi; Tanifuji, Katsuya; Miyamoto, Masayuki

doi:10.1243/0954409001531324

Cited by 8 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2) The variation in the stiffness and damping may also increase the lateral displacement of the outer rail under wheel-rail impact. However, the displacement is rather small, and it will not cause a gauge variation big enough to have a significant impact on safety [40][41][42]. (3) The change in rail cant has a notable influence on the wheel-rail lateral impact force of the forepart of the curved switch rail.…”

Section: Discussionmentioning

confidence: 99%

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Liao¹,

Luo²

2022

Machines

View full text Add to dashboard Cite

In the switch rail section of a high-speed turnout, the wheel–rail lateral impact of the forepart of the curved switch rail is the most important factor affecting the passing performance. In order to reduce the lateral impact and improve the passing safety, a complete vehicle–track multi-body dynamics model is devised in this paper. The variation of the wheel–rail relationship when the train passes through is analyzed. The lateral force and derailment coefficient are calculated under different parameters, and the wear index is also calculated under some working conditions. The results show that properly reducing the lateral damping of the curved switch rail can effectively reduce the wheel–rail lateral force and derailment coefficient of this section, while keeping the track shape undamaged. The optimization of rail cant design plays an important role in alleviating lateral wheel–rail impact. Decreasing the height reduction of the switch rail is helpful to optimize the lateral force of the forepart of the curved switch rail. The selection of a suitable cutting mode for switch blade and reasonable control of the wheel–rail impact angle as well as passing speed have positive effects on controlling the lateral wheel–rail impact of the forepart of the curved switch rail.

show abstract

Section: Discussionmentioning

confidence: 99%

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Liao¹,

Luo²

2022

Machines

View full text Add to dashboard Cite

show abstract

“…The effect of gauge on the dynamic response of a Shinkansen vehicle has been examined in reference [14], in which it is found that the lateral track irregularity combined with a slightly loose gauge decreased the lateral acceleration of the vehicle body, attributed to the more gentle steering applied to the bogie in response to lateral irregularity. A tight gauge was observed to generate increased flange contact in response to lateral irregularity, resulting in higher lateral accelerations.…”

Section: Track Specification and Measurementmentioning

confidence: 99%

Monitoring lateral track irregularity from in-service railway vehicles

Weston

Ling

Goodman

et al. 2007

Proceedings of the Institution of Mechanical Engineers, Part F:

130

101

View full text Add to dashboard Cite

Maintaining the alignment of railway track is vitally important for the smooth and safe passage of railway vehicles. Poor track alignment can result in poor ride quality, flange contact, or even flange climb. Accurate horizontal track geometry can be measured using a dedicated track recording vehicle or from a full track geometry recording system mounted on an in-service vehicle. This paper describes the use of sensors mounted on the bogie of an in-service vehicle to estimate the mean track alignment without the use of optical or contact sensors. In principle, either bogie lateral acceleration or yaw rate can be processed to give an estimate of mean lateral track irregularity, but a yaw rate gyro provides consistent estimates down to lower vehicle speeds than does an accelerometer and does not require compensation for the effects of bogie roll. An improved estimate can be obtained by inverting the dynamic relationship between the mean track alignment and the bogie yaw motion. This is demonstrated with results from a Class 175 vehicle. Continually monitoring the lateral response of a bogie on an in-service vehicle, using only a yaw rate gyro, can provide data enabling the prioritization of maintenance operations.

show abstract

Smart Actuation from Coupling between Active Polymer Gels and Fibrous Structures

Jeronimidis

2003

Solid Mechanics and Its Applications

View full text Add to dashboard Cite

Influence of track gauge variation on rail vehicle dynamics (an examination based on comparison between data from a test train running on track with irregularity artificially set and numerical simulation)

Cited by 8 publications

References 2 publications

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Study on the Factors Affecting the Wheel–Rail Lateral Impact of the Forepart of the Curved Switch Rail

Monitoring lateral track irregularity from in-service railway vehicles

Smart Actuation from Coupling between Active Polymer Gels and Fibrous Structures

Contact Info

Product

Resources

About