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Assessment of non-Hertzian wheel-rail contact models for numerical simulation of rail damages in switch panel of railway turnout

Published on May 1, 2019in Wear 2.95
· DOI :10.1016/j.wear.2019.05.027
Xiaochuan Ma3
Estimated H-index: 3
(Southwest Jiaotong University),
Ping Wang8
Estimated H-index: 8
(Southwest Jiaotong University)
+ 2 AuthorsJian Wang2
Estimated H-index: 2
(Southwest Jiaotong University)
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Abstract
Abstract Rail damages in railway turnout switch panels are closely related to the complicated wheel-rail contact conditions in the turnouts. In order to assess the applicability of different non-Hertzian contact models for simulating rail damages in railway turnout switch panel, three engineering approaches, i.e. Kik-Piotrowski, Ayasse-Chollet and Sichani, are adopted to simulate rail wear and surface initiated rolling contact fatigue (RCF) damages by studying a Chinese CN60-1100-1:18 high-speed turnout switch panel. A comparison is then carried out taking into account the results calculated by Kalker’s three-dimensional (3D) theory and an elastic-plastic FEM (Finite Element Method) model. The analyzed results show that the computational efficiencies of the three engineering approaches are all quite high for simulating rail damages in switch panel. Under elastic conditions, the calculation accuracy of the Sichani approach is found to be the highest, meaning that this would appear to be the preferred method for simulating rail damages in railway turnout switch panel. The research findings can be taken as theoretical guidance for selecting wheel-rail contact models and analyzing these types of damages in railway turnout switch panels.
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Published on Apr 1, 2019
Xiaochuan Ma3
Estimated H-index: 3
(Southwest Jiaotong University),
Ping Wang8
Estimated H-index: 8
(Southwest Jiaotong University)
+ 1 AuthorsRong Chen6
Estimated H-index: 6
(Southwest Jiaotong University)
Due to the complicated wheel–rail contact relation of railway turnouts, it is necessary to select a reasonable rolling contact model to simulate the vehicle–turnout dynamics and wheel–rail damages....
Published on Feb 1, 2019in Vehicle System Dynamics 2.61
Ping Wang8
Estimated H-index: 8
(Southwest Jiaotong University),
Ping Wang10
Estimated H-index: 10
(Southwest Jiaotong University)
+ 2 AuthorsRong Chen6
Estimated H-index: 6
(Southwest Jiaotong University)
ABSTRACTIn railway turnout, the stock rail and switch rail are separated to enable the vehicle changing among the tracks, and they are provided with different rail resilience level on the baseplate. Therefore, there will be vertical relative motion between stock/switch rails under the wheel loads, and the relative motion will affect consequentially the wheel–rail contact conditions. A method is developed to investigate the effect of the relative motion of stock/switch rails on the load transfer ...
Published on Jul 1, 2018in Tribology International 3.52
Z. Wei1
Estimated H-index: 1
(TU Delft: Delft University of Technology),
Alfredo Nunez Vicencio1
Estimated H-index: 1
(TU Delft: Delft University of Technology)
+ 2 AuthorsZili Li19
Estimated H-index: 19
(TU Delft: Delft University of Technology)
In this paper, we present a method for evaluating the performance of railway crossing rails after long-term service. The method includes 1) 3D profile and hardness measurements; 2) finite element simulation of wheel/rail interaction; and 3) numerical prediction of rail degradation. We conducted a case study on a crossing that had been in service for several years. The results indicate that the crossing experienced a run-in process in the major traffic direction, manifested as a widening of the r...
Published on Mar 17, 2018in Applied Sciences
Xiaochuan Ma3
Estimated H-index: 3
,
Ping Wang10
Estimated H-index: 10
+ 1 AuthorsRong Chen6
Estimated H-index: 6
Surface initiated rolling contact fatigue (RCF), mainly characterized by cracks and material stripping, is a common type of damage to turnout rails, which can not only shorten service life of turnout but also lead to poor running safety of vehicle. The rail surface initiated RCF of turnouts is caused by a long-term accumulation, the size and distribution of which are related to the dynamic parameters of the complicated vehicle-turnout system. In order to simulate the accumulation of rail damage,...
Published on Apr 1, 2017in Journal of Central South University 0.97
Jingmang Xu5
Estimated H-index: 5
(Southwest Jiaotong University),
Ping Wang8
Estimated H-index: 8
(Southwest Jiaotong University)
+ 2 AuthorsRong Chen6
Estimated H-index: 6
(Southwest Jiaotong University)
Rail wear is one of the main reasons for reducing the service life of high-speed railway turnouts in China. The rail wear characteristics of high-speed railway turnouts are influenced by a large number of input parameters of the complex train-turnout system. To reproduce the actual operation conditions of railway turnouts, random distributions of these inputs need to be considered in rail wear simulation. For a given nominal layout of the high-speed railway turnout, 19 input parameters for rail ...
Published on Nov 1, 2016in Wear 2.95
Jens B. Nielsen84
Estimated H-index: 84
(Chalmers University of Technology),
Björn Pålsson8
Estimated H-index: 8
(Chalmers University of Technology),
Peter Torstensson7
Estimated H-index: 7
(Chalmers University of Technology)
A methodology for numerical prediction of accumulated rail damage in railway turnouts is presented. Based on simulation of dynamic vehicle-track interaction followed by a discretisation of the conditions in each wheel-rail contact, distributions of rail wear are calculated by the Archard model of sliding wear, while surface initiated rolling contact fatigue (RCF) damage is evaluated by the Palmgren–Miner rule and an index building on shakedown theory. Partial slip in the wheel-rail contacts and ...
Published on Jun 2, 2016in Vehicle System Dynamics 2.61
Matin Shahzamanian Sichani2
Estimated H-index: 2
(KTH: Royal Institute of Technology),
Roger Enblom9
Estimated H-index: 9
(KTH: Royal Institute of Technology),
Mats Berg13
Estimated H-index: 13
(KTH: Royal Institute of Technology)
In most rail vehicle dynamics simulation packages, tangential solution of the wheel–rail contact is gained by means of Kalker's FASTSIM algorithm. While 5–25% error is expected for creep force estimation, the errors of shear stress distribution, needed for wheel–rail damage analysis, may rise above 30% due to the parabolic traction bound. Therefore, a novel algorithm named FaStrip is proposed as an alternative to FASTSIM. It is based on the strip theory which extends the two-dimensional rolling ...
Published on Jan 28, 2016in Advances in Mechanical Engineering
Jingmang Xu5
Estimated H-index: 5
(Southwest Jiaotong University),
Ping Wang8
Estimated H-index: 8
(Southwest Jiaotong University)
+ 1 AuthorsRong Chen6
Estimated H-index: 6
(Southwest Jiaotong University)
Severe wear is a common damage mechanism in railway turnouts, which strongly affects the dynamic performance of railway vehicles and maintenance costs of tracks. This article explores the effects of profile wear on contact behaviors in the wheel–rail/switch contact and dynamic interaction, and nominal and measured worn turnout rail profiles are used as boundary conditions of wheel–rail contact. The calculation of the dynamic loads and the resultant contact stresses and internal stresses makes it...
Published on Dec 2, 2014in Vehicle System Dynamics 2.61
Matin Shahzamanian Sichani2
Estimated H-index: 2
(KTH: Royal Institute of Technology),
Roger Enblom9
Estimated H-index: 9
(KTH: Royal Institute of Technology),
Mats Berg13
Estimated H-index: 13
(KTH: Royal Institute of Technology)
An approximate analytical method is proposed for calculating the contact patch and pressure distribution in the wheel-rail interface. The deformation of the surfaces in contact is approximated using the separation between them. This makes it possible to estimate the contact patch analytically. The contact pressure distribution in the rolling direction is assumed to be elliptic with its maximum calculated by applying Hertz' solution locally. The results are identical to Hertz's for elliptic cases...
Published on Jun 1, 2014in Wear 2.95
Michel Sébès3
Estimated H-index: 3
(University of Paris),
Hugues Chollet3
Estimated H-index: 3
(University of Paris)
+ 1 AuthorsLuc Chevalier11
Estimated H-index: 11
(University of Paris)
Multi-body-system (MBS) simulation is widely used in the railway industry. One of its major topics is the assessment of rolling contact fatigue (RCF). This damaging process is linked to plasticity. MBS wheel–rail contact models usually neglect plasticity as it does not change the vehicle behaviour. With the proposed method, contact stresses are consistent with a perfect plastic law. This new method has been recently detailed: it is an extension of the STRIPES semi-Hertzian (SH) model. A multi-He...
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