Reducing impact loads at railway crossings using tuned resilient elements

Yann Bezin, Dimitrios Kostovasilis, Bello Sambo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The movement of wheels at crossing panels in a railway turnout lead to signif-icant dynamic load amplifications. These in turn lead to high maintenance and unex-pected delay costs as cast crossings suffer fatigue damage under repeated load cycles. While improvement to the crossing top surface design can help improve the load trans-fer and reduce the loads, it remains difficult to manage once on track and once wear and plastic deformation affect the wheel-rail performance. Instead, this work is proposing to introduce additional resilient elements in the zone where the wheel transfers over to the crossing nose, so as to reduce the effect of the dynamic impact loads and thus reduce a range of degradation modes. The effect of resiliently mounting the nose part is assessed using multibody dynamics simulation and shows substantial reduction in rail damage es-pecially as vehicle speed increases. A proxy for first impact load in the form of the second derivative of wheel motion is also proposed.
Original languageEnglish
Title of host publicationAdvances in Dynamics of Vehicles on Roads and Tracks
Subtitle of host publicationProceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden
EditorsMatthijs Klomp, Fredrik Bruzelius, Jens Nielsen, Angela Hillemyr
PublisherSpringer
ISBN (Electronic)9783030380779
ISBN (Print)9783030380762
Publication statusAccepted/In press - 15 Mar 2019
Event26th IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks - Gothenburg, Sweden
Duration: 12 Aug 201916 Aug 2019
https://iavsd2019.se/

Publication series

NameLecture Notes in Mechanical Engineering
PublisherSpringer
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference26th IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks
CountrySweden
CityGothenburg
Period12/08/1916/08/19
Internet address

Fingerprint

Wheels
Rails
Fatigue damage
Dynamic loads
Mountings
Amplification
Plastic deformation
Wear of materials
Derivatives
Degradation
Computer simulation
Costs

Cite this

Bezin, Y., Kostovasilis, D., & Sambo, B. (Accepted/In press). Reducing impact loads at railway crossings using tuned resilient elements. In M. Klomp, F. Bruzelius, J. Nielsen, & A. Hillemyr (Eds.), Advances in Dynamics of Vehicles on Roads and Tracks: Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden (Lecture Notes in Mechanical Engineering). Springer.
Bezin, Yann ; Kostovasilis, Dimitrios ; Sambo, Bello. / Reducing impact loads at railway crossings using tuned resilient elements. Advances in Dynamics of Vehicles on Roads and Tracks: Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden. editor / Matthijs Klomp ; Fredrik Bruzelius ; Jens Nielsen ; Angela Hillemyr. Springer, 2019. (Lecture Notes in Mechanical Engineering).
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abstract = "The movement of wheels at crossing panels in a railway turnout lead to signif-icant dynamic load amplifications. These in turn lead to high maintenance and unex-pected delay costs as cast crossings suffer fatigue damage under repeated load cycles. While improvement to the crossing top surface design can help improve the load trans-fer and reduce the loads, it remains difficult to manage once on track and once wear and plastic deformation affect the wheel-rail performance. Instead, this work is proposing to introduce additional resilient elements in the zone where the wheel transfers over to the crossing nose, so as to reduce the effect of the dynamic impact loads and thus reduce a range of degradation modes. The effect of resiliently mounting the nose part is assessed using multibody dynamics simulation and shows substantial reduction in rail damage es-pecially as vehicle speed increases. A proxy for first impact load in the form of the second derivative of wheel motion is also proposed.",
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Bezin, Y, Kostovasilis, D & Sambo, B 2019, Reducing impact loads at railway crossings using tuned resilient elements. in M Klomp, F Bruzelius, J Nielsen & A Hillemyr (eds), Advances in Dynamics of Vehicles on Roads and Tracks: Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden. Lecture Notes in Mechanical Engineering, Springer, 26th IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks, Gothenburg, Sweden, 12/08/19.

Reducing impact loads at railway crossings using tuned resilient elements. / Bezin, Yann; Kostovasilis, Dimitrios; Sambo, Bello.

Advances in Dynamics of Vehicles on Roads and Tracks: Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden. ed. / Matthijs Klomp; Fredrik Bruzelius; Jens Nielsen; Angela Hillemyr. Springer, 2019. (Lecture Notes in Mechanical Engineering).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Reducing impact loads at railway crossings using tuned resilient elements

AU - Bezin, Yann

AU - Kostovasilis, Dimitrios

AU - Sambo, Bello

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N2 - The movement of wheels at crossing panels in a railway turnout lead to signif-icant dynamic load amplifications. These in turn lead to high maintenance and unex-pected delay costs as cast crossings suffer fatigue damage under repeated load cycles. While improvement to the crossing top surface design can help improve the load trans-fer and reduce the loads, it remains difficult to manage once on track and once wear and plastic deformation affect the wheel-rail performance. Instead, this work is proposing to introduce additional resilient elements in the zone where the wheel transfers over to the crossing nose, so as to reduce the effect of the dynamic impact loads and thus reduce a range of degradation modes. The effect of resiliently mounting the nose part is assessed using multibody dynamics simulation and shows substantial reduction in rail damage es-pecially as vehicle speed increases. A proxy for first impact load in the form of the second derivative of wheel motion is also proposed.

AB - The movement of wheels at crossing panels in a railway turnout lead to signif-icant dynamic load amplifications. These in turn lead to high maintenance and unex-pected delay costs as cast crossings suffer fatigue damage under repeated load cycles. While improvement to the crossing top surface design can help improve the load trans-fer and reduce the loads, it remains difficult to manage once on track and once wear and plastic deformation affect the wheel-rail performance. Instead, this work is proposing to introduce additional resilient elements in the zone where the wheel transfers over to the crossing nose, so as to reduce the effect of the dynamic impact loads and thus reduce a range of degradation modes. The effect of resiliently mounting the nose part is assessed using multibody dynamics simulation and shows substantial reduction in rail damage es-pecially as vehicle speed increases. A proxy for first impact load in the form of the second derivative of wheel motion is also proposed.

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KW - Crossing nose

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KW - unsprung mass

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BT - Advances in Dynamics of Vehicles on Roads and Tracks

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Bezin Y, Kostovasilis D, Sambo B. Reducing impact loads at railway crossings using tuned resilient elements. In Klomp M, Bruzelius F, Nielsen J, Hillemyr A, editors, Advances in Dynamics of Vehicles on Roads and Tracks: Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden. Springer. 2019. (Lecture Notes in Mechanical Engineering).