Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM)

Akira Aikawa; Daisuke Nishiura; Sakdirat Kaewunruen; Hide Sakaguchi

Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM)

Akira Aikawa, Daisuke Nishiura, Sakdirat Kaewunruen, Hide Sakaguchi

Research output: Contribution to conference (unpublished) › Paper › peer-review

Abstract

A quadruple discrete element method (QDEM) was developed for viscoelastic multi-body dynamics. The sleeper motion modeled using QDEM was coupled with the rail motion modeled using a finite element method (FEM). The traffic impact response of a ballast particle and a sleeper was analyzed. The three-dimensional spatial distribution of ballast particle displacement was clearly revealed. Moreover, the ballast layer absorbed the low frequency vibration of the sleeper more effectively than its high frequency vibration. This study suggests that the proposed QDEM-FEM can provide greater insight into the impact response of ballasted railway tracks.

Original language	English
Number of pages	2
Publication status	Published - 4 Oct 2018
Event	Fourth International Conference on Railway Technology: Research, Development and Maintenance - Melia Hotel, Sitges, Barcelona, Spain Duration: 3 Sept 2018 → 7 Sept 2018 http://www.railwaysconference.com/ http://www.railwaysconference.com/

Conference

Conference	Fourth International Conference on Railway Technology: Research, Development and Maintenance
Abbreviated title	Railways 2018
Country/Territory	Spain
City	Barcelona
Period	3/09/18 → 7/09/18
Internet address	http://www.railwaysconference.com/ http://www.railwaysconference.com/

Keywords

discrete element model
viscoelastic deformation
finite element method
railway dynamics
ballasted track

Cite this

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title = "Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM)",

abstract = "A quadruple discrete element method (QDEM) was developed for viscoelastic multi-body dynamics. The sleeper motion modeled using QDEM was coupled with the rail motion modeled using a finite element method (FEM). The traffic impact response of a ballast particle and a sleeper was analyzed. The three-dimensional spatial distribution of ballast particle displacement was clearly revealed. Moreover, the ballast layer absorbed the low frequency vibration of the sleeper more effectively than its high frequency vibration. This study suggests that the proposed QDEM-FEM can provide greater insight into the impact response of ballasted railway tracks.",

keywords = "discrete element model, viscoelastic deformation, finite element method, railway dynamics, ballasted track",

author = "Akira Aikawa and Daisuke Nishiura and Sakdirat Kaewunruen and Hide Sakaguchi",

year = "2018",

month = oct,

day = "4",

language = "English",

note = "Fourth International Conference on Railway Technology: Research, Development and Maintenance, Railways 2018 ; Conference date: 03-09-2018 Through 07-09-2018",

url = "http://www.railwaysconference.com/, http://www.railwaysconference.com/",

}

Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM). / Aikawa, Akira; Nishiura, Daisuke; Kaewunruen, Sakdirat et al.
2018. Paper presented at Fourth International Conference on Railway Technology: Research, Development and Maintenance, Barcelona, Spain.

Research output: Contribution to conference (unpublished) › Paper › peer-review

TY - CONF

T1 - Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM)

AU - Aikawa, Akira

AU - Nishiura, Daisuke

AU - Kaewunruen, Sakdirat

AU - Sakaguchi, Hide

PY - 2018/10/4

Y1 - 2018/10/4

N2 - A quadruple discrete element method (QDEM) was developed for viscoelastic multi-body dynamics. The sleeper motion modeled using QDEM was coupled with the rail motion modeled using a finite element method (FEM). The traffic impact response of a ballast particle and a sleeper was analyzed. The three-dimensional spatial distribution of ballast particle displacement was clearly revealed. Moreover, the ballast layer absorbed the low frequency vibration of the sleeper more effectively than its high frequency vibration. This study suggests that the proposed QDEM-FEM can provide greater insight into the impact response of ballasted railway tracks.

AB - A quadruple discrete element method (QDEM) was developed for viscoelastic multi-body dynamics. The sleeper motion modeled using QDEM was coupled with the rail motion modeled using a finite element method (FEM). The traffic impact response of a ballast particle and a sleeper was analyzed. The three-dimensional spatial distribution of ballast particle displacement was clearly revealed. Moreover, the ballast layer absorbed the low frequency vibration of the sleeper more effectively than its high frequency vibration. This study suggests that the proposed QDEM-FEM can provide greater insight into the impact response of ballasted railway tracks.

KW - discrete element model

KW - viscoelastic deformation

KW - finite element method

KW - railway dynamics

KW - ballasted track

M3 - Paper

T2 - Fourth International Conference on Railway Technology: Research, Development and Maintenance

Y2 - 3 September 2018 through 7 September 2018

ER -

Construction of a large-scale ballasted track analytical model by elastic discrete element method (QDEM)

Abstract

Conference

Keywords

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Cite this