A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model

Abstract A three-dimensional (3-D) wheel-rail rolling contact model with a wheel flat was built using commercial software Hypermesh, and the dynamic finite element simulation was conducted using LS-DYNA 3D/explicit code. Influences of the train speed, flat length and axle load on the vertical wheel-...

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Main Authors: Liangliang Han, Lin Jing, Kai Liu
Format: Article
Language:English
Published: SpringerOpen 2017-05-01
Series:Journal of Modern Transportation
Subjects:
Online Access:http://link.springer.com/article/10.1007/s40534-017-0131-0
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spelling doaj-192a1163248f4b63b87b6c7e0bad6e232020-12-02T14:17:22ZengSpringerOpenJournal of Modern Transportation2095-087X2196-05772017-05-0125212413110.1007/s40534-017-0131-0A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact modelLiangliang Han0Lin Jing1Kai Liu2State Key Laboratory of Traction Power, Southwest Jiaotong UniversityState Key Laboratory of Traction Power, Southwest Jiaotong UniversityState Key Laboratory of Traction Power, Southwest Jiaotong UniversityAbstract A three-dimensional (3-D) wheel-rail rolling contact model with a wheel flat was built using commercial software Hypermesh, and the dynamic finite element simulation was conducted using LS-DYNA 3D/explicit code. Influences of the train speed, flat length and axle load on the vertical wheel-rail impact response were discussed, respectively. The results show that the maximum vertical wheel-rail impact force induced by the wheel flat is higher than that generated by the perfect wheel, and these two dynamic impact forces are much greater than the static axle load. Besides, the maximum von Mises equivalent stress and maximum equivalent plastic strain are observed on the wheel-rail contact surface, and both of them as well as the maximum wheel-rail impact force are sensitive to train speed, flat length and axle load.http://link.springer.com/article/10.1007/s40534-017-0131-0High-speed trainWheel–rail impactWheel flatFE simulation
collection DOAJ
language English
format Article
sources DOAJ
author Liangliang Han
Lin Jing
Kai Liu
spellingShingle Liangliang Han
Lin Jing
Kai Liu
A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
Journal of Modern Transportation
High-speed train
Wheel–rail impact
Wheel flat
FE simulation
author_facet Liangliang Han
Lin Jing
Kai Liu
author_sort Liangliang Han
title A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
title_short A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
title_full A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
title_fullStr A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
title_full_unstemmed A dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-D rolling contact model
title_sort dynamic simulation of the wheel–rail impact caused by a wheel flat using a 3-d rolling contact model
publisher SpringerOpen
series Journal of Modern Transportation
issn 2095-087X
2196-0577
publishDate 2017-05-01
description Abstract A three-dimensional (3-D) wheel-rail rolling contact model with a wheel flat was built using commercial software Hypermesh, and the dynamic finite element simulation was conducted using LS-DYNA 3D/explicit code. Influences of the train speed, flat length and axle load on the vertical wheel-rail impact response were discussed, respectively. The results show that the maximum vertical wheel-rail impact force induced by the wheel flat is higher than that generated by the perfect wheel, and these two dynamic impact forces are much greater than the static axle load. Besides, the maximum von Mises equivalent stress and maximum equivalent plastic strain are observed on the wheel-rail contact surface, and both of them as well as the maximum wheel-rail impact force are sensitive to train speed, flat length and axle load.
topic High-speed train
Wheel–rail impact
Wheel flat
FE simulation
url http://link.springer.com/article/10.1007/s40534-017-0131-0
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