Numerical study on the ratcheting performance of heavy haul rails in curved tracks

Hang Su; Chung Lun Pun; Peter Mutton; Qianhua Kan; Wenyi Yan

Numerical study on the ratcheting performance of heavy haul rails in curved tracks

Hang Su, Chung Lun Pun, Peter Mutton, Qianhua Kan, Wenyi Yan

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

The ratcheting performance of heavy haul rails in curved tracks under different in-service loading conditions was numerically evaluated by using a recently developed approach. The wheel-high rail cyclic rolling contact was simulated by translating the non-Hertzian contact pressure distribution and the estimated longitudinal tangential traction repeatedly on the running surface of the high rail. The maximum ratcheting strain rate of the rail target section was obtained in each loading cycle. Based on the known ductility limit of the rail steel and the obtained maximum stabilized ratcheting strain rate, the crack initiation life of the rail was predicted in each case. The results indicate that the crack initiation life for all the three rail steels investigated decreases with the increase of the normalized tangential traction, the friction coefficient, the ratio of lateral/axle load and the axle load. The hypereutectoid steel with a lower carbon content always shows the best ratcheting performance and is likely to be the best choice for the high rails in curved tracks. The results can provide valuable information to assist rail operators in the selection of rail steel grades and the development of rail maintenance strategies.

Original language	English
Title of host publication	Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018
Editors	Alfredo Nunez, Zili Li
Publisher	DELFT University of Technology
Pages	938-947
Number of pages	10
ISBN (Electronic)	9789461869630
Publication status	Published - 1 Jan 2018
Event	International Conference on Contact Mechanics and Wear of Rail/Wheel Systems 2018 - Delft, Netherlands Duration: 24 Sept 2018 → 27 Sept 2018 Conference number: 11th

Publication series

Name	Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018

Conference

Conference	International Conference on Contact Mechanics and Wear of Rail/Wheel Systems 2018
Abbreviated title	CM 2018
Country/Territory	Netherlands
City	Delft
Period	24/09/18 → 27/09/18

Keywords

Crack initiation life
Curved tracks
Finite element analysis.
Ratcheting performance
Two-point cyclic rolling contact

Cite this

Su, H., Pun, C. L., Mutton, P., Kan, Q., & Yan, W. (2018). Numerical study on the ratcheting performance of heavy haul rails in curved tracks. In A. Nunez, & Z. Li (Eds.), Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018 (pp. 938-947). (Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018). DELFT University of Technology.

Su, Hang ; Pun, Chung Lun ; Mutton, Peter et al. / Numerical study on the ratcheting performance of heavy haul rails in curved tracks. Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018. editor / Alfredo Nunez ; Zili Li. DELFT University of Technology, 2018. pp. 938-947 (Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018).

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title = "Numerical study on the ratcheting performance of heavy haul rails in curved tracks",

abstract = "The ratcheting performance of heavy haul rails in curved tracks under different in-service loading conditions was numerically evaluated by using a recently developed approach. The wheel-high rail cyclic rolling contact was simulated by translating the non-Hertzian contact pressure distribution and the estimated longitudinal tangential traction repeatedly on the running surface of the high rail. The maximum ratcheting strain rate of the rail target section was obtained in each loading cycle. Based on the known ductility limit of the rail steel and the obtained maximum stabilized ratcheting strain rate, the crack initiation life of the rail was predicted in each case. The results indicate that the crack initiation life for all the three rail steels investigated decreases with the increase of the normalized tangential traction, the friction coefficient, the ratio of lateral/axle load and the axle load. The hypereutectoid steel with a lower carbon content always shows the best ratcheting performance and is likely to be the best choice for the high rails in curved tracks. The results can provide valuable information to assist rail operators in the selection of rail steel grades and the development of rail maintenance strategies.",

keywords = "Crack initiation life, Curved tracks, Finite element analysis., Ratcheting performance, Two-point cyclic rolling contact",

author = "Hang Su and Pun, {Chung Lun} and Peter Mutton and Qianhua Kan and Wenyi Yan",

year = "2018",

month = jan,

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language = "English",

series = "Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018",

publisher = "DELFT University of Technology",

pages = "938--947",

editor = "Alfredo Nunez and Zili Li",

booktitle = "Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018",

note = "International Conference on Contact Mechanics and Wear of Rail/Wheel Systems 2018, CM 2018 ; Conference date: 24-09-2018 Through 27-09-2018",

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Su, H, Pun, CL, Mutton, P, Kan, Q & Yan, W 2018, Numerical study on the ratcheting performance of heavy haul rails in curved tracks. in A Nunez & Z Li (eds), Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018. Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018, DELFT University of Technology, pp. 938-947, International Conference on Contact Mechanics and Wear of Rail/Wheel Systems 2018, Delft, Netherlands, 24/09/18.

Numerical study on the ratcheting performance of heavy haul rails in curved tracks. / Su, Hang; Pun, Chung Lun; Mutton, Peter et al.
Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018. ed. / Alfredo Nunez; Zili Li. DELFT University of Technology, 2018. p. 938-947 (Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - Numerical study on the ratcheting performance of heavy haul rails in curved tracks

AU - Su, Hang

AU - Pun, Chung Lun

AU - Mutton, Peter

AU - Kan, Qianhua

AU - Yan, Wenyi

N1 - Conference code: 11th

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The ratcheting performance of heavy haul rails in curved tracks under different in-service loading conditions was numerically evaluated by using a recently developed approach. The wheel-high rail cyclic rolling contact was simulated by translating the non-Hertzian contact pressure distribution and the estimated longitudinal tangential traction repeatedly on the running surface of the high rail. The maximum ratcheting strain rate of the rail target section was obtained in each loading cycle. Based on the known ductility limit of the rail steel and the obtained maximum stabilized ratcheting strain rate, the crack initiation life of the rail was predicted in each case. The results indicate that the crack initiation life for all the three rail steels investigated decreases with the increase of the normalized tangential traction, the friction coefficient, the ratio of lateral/axle load and the axle load. The hypereutectoid steel with a lower carbon content always shows the best ratcheting performance and is likely to be the best choice for the high rails in curved tracks. The results can provide valuable information to assist rail operators in the selection of rail steel grades and the development of rail maintenance strategies.

AB - The ratcheting performance of heavy haul rails in curved tracks under different in-service loading conditions was numerically evaluated by using a recently developed approach. The wheel-high rail cyclic rolling contact was simulated by translating the non-Hertzian contact pressure distribution and the estimated longitudinal tangential traction repeatedly on the running surface of the high rail. The maximum ratcheting strain rate of the rail target section was obtained in each loading cycle. Based on the known ductility limit of the rail steel and the obtained maximum stabilized ratcheting strain rate, the crack initiation life of the rail was predicted in each case. The results indicate that the crack initiation life for all the three rail steels investigated decreases with the increase of the normalized tangential traction, the friction coefficient, the ratio of lateral/axle load and the axle load. The hypereutectoid steel with a lower carbon content always shows the best ratcheting performance and is likely to be the best choice for the high rails in curved tracks. The results can provide valuable information to assist rail operators in the selection of rail steel grades and the development of rail maintenance strategies.

KW - Crack initiation life

KW - Curved tracks

KW - Finite element analysis.

KW - Ratcheting performance

KW - Two-point cyclic rolling contact

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M3 - Conference Paper

AN - SCOPUS:85059508821

T3 - Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018

SP - 938

EP - 947

BT - Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018

A2 - Nunez, Alfredo

A2 - Li, Zili

PB - DELFT University of Technology

T2 - International Conference on Contact Mechanics and Wear of Rail/Wheel Systems 2018

Y2 - 24 September 2018 through 27 September 2018

ER -

Su H, Pun CL, Mutton P, Kan Q, Yan W. Numerical study on the ratcheting performance of heavy haul rails in curved tracks. In Nunez A, Li Z, editors, Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018. DELFT University of Technology. 2018. p. 938-947. (Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018).

Numerical study on the ratcheting performance of heavy haul rails in curved tracks

Abstract

Publication series

Conference

Keywords

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Research output

Numerical study on the ratcheting performance of heavy haul rails in curved tracks

Cite this