Reducing switch panel degradation by improving the track friendliness of trains

Hiensch, Martin; Wiersma, Pier

doi:10.1016/j.wear.2016.03.031

Cited by 4 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This suspension behaviour is achieved through the application of new elastic components with a characteristic that is dependent on loading frequency. As presented in [12] these so-called Frequency Selective Stiffness or 'hydrobush' elements can, when applied at the radial arm pivot bush, lead to a significant reduction of rail and wheel surface damage. An overview of further design optimisation measures is presented in [8].…”

Section: Measures To Improve Track-friendlinessmentioning

confidence: 99%

“…And (3) application of trailer arms with hydrobush: applied stiffness values are based upon earlier investigation published in [12] (static stiffness 2.8 kN/mm, dynamic stiffness 15 kN/mm). Within [12] it is described how the frequency dependent effect is implemented into the Vampire model. All design modifications were variants of the Y25L bogie.…”

Section: Bogie and Vehicle Modelsmentioning

confidence: 99%

“…The most common type of turnout applied in Dutch track has been selected. This turnout has a crossing angle 1 over 9, with switch radius 195 m as presented in [12].…”

Section: Switch Loadingmentioning

confidence: 99%

See 2 more Smart Citations

Enhancing rail infra durability through freight bogie design

Hiensch¹,

Burgelman²,

Hoeding³

et al. 2018

Vehicle System Dynamics

Self Cite

View full text Add to dashboard Cite

The extensive usage of railway infrastructure demands a high level of robustness, which can be achieved partly by considering (and managing) the track and rolling stock as one integral system with due attention to their interface. A growing number of infra managers consider, in this framework, the track-friendliness of vehicles that have access to their tracks as a key control parameter. The aim of this study is to provide further insight into potential contributions to track-friendliness, assessed in relation to track deterioration mechanisms and cost, understanding how potential benefits are best to be utilised. Six proposed freight bogie design measures are evaluated with respect to the improvement in curving behaviour, switch negotiation and related track degradation mechanisms. To this purpose a sensitivity analysis has been carried out by means of track-train simulations in the VAMPIRE R multi body simulation software. Additionally, the impact on track deterioration costs has been calculated for those track-friendly design modifications identified as most promising. Conclusions show that the standard Y25L freight bogie design displays rather a track-friendly behaviour. Tuning the primary yaw stiffness shows a high potential to further improve trackfriendliness, significantly reducing track deterioration cost at narrow radius curves and switches (by, respectively, 30% and 60%). When calculating the overall deterioration cost for the travelled route, the calculation model should include a well-balanced representation of switches and narrow radius curves.

show abstract

Section: Measures To Improve Track-friendlinessmentioning

confidence: 99%

Section: Bogie and Vehicle Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing rail infra durability through freight bogie design

Hiensch¹,

Burgelman²,

Hoeding³

et al. 2018

Vehicle System Dynamics

Self Cite

View full text Add to dashboard Cite

show abstract

“…When a torque is applied to the wheels of the model, the driving force will be balanced by this spring/damper, preventing acceleration. Previously validation of the vehicle model has been performed, as described in [14]. Initially by comparing its resonance frequencies and natural damping coefficients with measured accelerations from a wedge test and further validated by comparing measured vehicle running behaviour with simulation output using measured track geometry data.…”

Section: Modelling Of Vehicle-turnout Dynamicsmentioning

confidence: 99%

“…The track model is coupled to each wheelset in the vehicle model (moving track model). The applied track model describes the diverging route through the switch panel of the most common type of turnout applied in Dutch track: crossing angle 1 in 9, as described in [14]. The cross-sectional geometry through the complete switch panel has been built up from over 120 transverse rail profiles, measured in track at an average worn turnout, using the MiniProf Measurement system ( Figure 4).…”

Section: Modelling Of Vehicle-turnout Dynamicsmentioning

confidence: 99%

Switch Panel wear loading – a parametric study regarding governing train operational factors

Hiensch

Burgelman²

2017

Vehicle System Dynamics

View full text Add to dashboard Cite

The acting forces and resulting material degradation at the running surfaces of wheels and rail are determined by vehicle, track, interface and operational characteristics. To effectively manage the experienced wear, plastic deformation and crack development at wheels and rail, the interaction between vehicle and track demands a system approach both in maintenance and in design. This requires insight into the impact of train operational parameters on rail-and wheel degradation, in particular at switches and crossings due to the complex dynamic behaviour of a railway vehicle at a turnout. A parametric study was carried out by means of vehicle-track simulations within the VAMPIRE R multibody simulation software, performing a sensitivity analysis regarding operational factors and their impact on expected switch panel wear loading. Additionally, theoretical concepts were cross-checked with operational practices by means of a case study in response to a dramatic change in lateral rail wear development at specific switches in Dutch track. Data from train operation, track maintenance and track inspection were analysed, providing further insight into the operational dependencies. From the simulations performed in this study, it was found that switch rail lateral wear loading at the diverging route of a 1:9 type turnout is significantly influenced by the level of wheel-rail friction and to a lesser extent by the direction of travel (facing or trailing). The influence of other investigated parameters, being vehicle speed, traction, gauge widening and track layout is found to be small. Findings from the case study further confirm the simulation outcome. This research clearly demonstrates the contribution flange lubrication can have in preventing abnormal lateral wear at locations where the wheel-rail interface is heavily loaded. ARTICLE HISTORY

show abstract