Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train...
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MDPI AG
2021
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oai:doaj.org-article:f0610279686c4e89a65b1006b64b41772021-11-11T19:49:02ZModelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model10.3390/su1321122472071-1050https://doaj.org/article/f0610279686c4e89a65b1006b64b41772021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12247https://doaj.org/toc/2071-1050Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train load, is one of the most important factors leading to track degradation. As a result, when planning maintenance, it is vital to predict the behaviour of the ballast under cyclic loading. Since ballast is a granular matter with a nonlinear and discontinuous mechanical behaviour, the discrete element method (DEM) was used in this paper to model the ballast particle rearrangement under cyclic loading. We studied the performance of linear and nonlinear models in simulating the settlement of the sleeper, the lateral deformation of the ballast shoulder and the porosity changes under the sleeper. The models were evaluated based on their ability to mimic the ballast degradation pattern in vertical and lateral direction. The linear contact model and the hysteretic contact model were used in the simulations, and the effect of the friction coefficient and different damping models on the simulations was assessed. An outcome of this study was that a nonlinear model was proposed in which both the linear and the hysteretic contact models are combined. The simulation of the sleeper settlement and the changes in the porosity under the sleeper improved in the proposed nonlinear model, while the computation time required for the proposed model decreased compared to that required for the linear model.Elahe TalebiahooieFlorian ThieryJingjing MengHans MattssonErling NordlundMatti RantataloMDPI AGarticleballasted tracklinear contact modelhysteretic contact modelcyclic loadingDEMEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12247, p 12247 (2021) |
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ballasted track linear contact model hysteretic contact model cyclic loading DEM Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
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ballasted track linear contact model hysteretic contact model cyclic loading DEM Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Elahe Talebiahooie Florian Thiery Jingjing Meng Hans Mattsson Erling Nordlund Matti Rantatalo Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
description |
Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train load, is one of the most important factors leading to track degradation. As a result, when planning maintenance, it is vital to predict the behaviour of the ballast under cyclic loading. Since ballast is a granular matter with a nonlinear and discontinuous mechanical behaviour, the discrete element method (DEM) was used in this paper to model the ballast particle rearrangement under cyclic loading. We studied the performance of linear and nonlinear models in simulating the settlement of the sleeper, the lateral deformation of the ballast shoulder and the porosity changes under the sleeper. The models were evaluated based on their ability to mimic the ballast degradation pattern in vertical and lateral direction. The linear contact model and the hysteretic contact model were used in the simulations, and the effect of the friction coefficient and different damping models on the simulations was assessed. An outcome of this study was that a nonlinear model was proposed in which both the linear and the hysteretic contact models are combined. The simulation of the sleeper settlement and the changes in the porosity under the sleeper improved in the proposed nonlinear model, while the computation time required for the proposed model decreased compared to that required for the linear model. |
format |
article |
author |
Elahe Talebiahooie Florian Thiery Jingjing Meng Hans Mattsson Erling Nordlund Matti Rantatalo |
author_facet |
Elahe Talebiahooie Florian Thiery Jingjing Meng Hans Mattsson Erling Nordlund Matti Rantatalo |
author_sort |
Elahe Talebiahooie |
title |
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
title_short |
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
title_full |
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
title_fullStr |
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
title_full_unstemmed |
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model |
title_sort |
modelling of railway sleeper settlement under cyclic loading using a hysteretic ballast contact model |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/f0610279686c4e89a65b1006b64b4177 |
work_keys_str_mv |
AT elahetalebiahooie modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel AT florianthiery modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel AT jingjingmeng modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel AT hansmattsson modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel AT erlingnordlund modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel AT mattirantatalo modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel |
_version_ |
1718431444053786624 |