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Modelling train-induced vibration of structures using a mixed-frame-of-reference approach

Modelling train-induced vibration of structures using a mixed-frame-of-reference approach
Modelling train-induced vibration of structures using a mixed-frame-of-reference approach
A novel computational modelling approach for prediction of environmental vibration is introduced. The model is formulated in both moving and fixed frames of reference, with a mixed frame of reference formulation introduced to couple the two frames of reference. The resulting system is able to model a vehicle travelling on an infinite railway track, formulated in a moving frame of reference, interacting via the soil with a structure (i.e. building), formulated in a fixed frame of reference. The method utilizes a semi-analytical soil model with the structures modelled using three-dimensional finite elements. Two solution procedures of the full system are proposed: partial coupling, where some secondary effects from reflected waves propagating through soil are disregarded, and full coupling, where the vehicle–track–soil–structure is modelled as a fully coupled system. Both proposed solution procedures offer a one-step approach for solving the whole system in the frequency–spatial domain. The usage of the model is demonstrated in two example cases: one analysing a simple building structure near a railway track, using the partial coupling solution procedure, and another one analysing the behaviour of a vehicle model traversing over a rigid block embedded inside the soil, using the full coupling solution procedure. The introduced modelling approach offers a computationally efficient solution procedure, at the same time being applicable to a wide array of application cases.
mixed frame of reference, soil–structure interaction, train induced vibration
0022-460X
Bucinskas, Paulius
43f93600-479d-4af2-a4f2-76b51f58d7e0
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Andersen, Lars Vabbersgaard
94c7bed0-1926-4cf2-b07a-8ad2c5dd9b35
Bucinskas, Paulius
43f93600-479d-4af2-a4f2-76b51f58d7e0
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Andersen, Lars Vabbersgaard
94c7bed0-1926-4cf2-b07a-8ad2c5dd9b35

Bucinskas, Paulius, Ntotsios, Evangelos, Thompson, David and Andersen, Lars Vabbersgaard (2020) Modelling train-induced vibration of structures using a mixed-frame-of-reference approach. Journal of Sound and Vibration, 491, [115575]. (doi:10.1016/j.jsv.2020.115575).

Record type: Article

Abstract

A novel computational modelling approach for prediction of environmental vibration is introduced. The model is formulated in both moving and fixed frames of reference, with a mixed frame of reference formulation introduced to couple the two frames of reference. The resulting system is able to model a vehicle travelling on an infinite railway track, formulated in a moving frame of reference, interacting via the soil with a structure (i.e. building), formulated in a fixed frame of reference. The method utilizes a semi-analytical soil model with the structures modelled using three-dimensional finite elements. Two solution procedures of the full system are proposed: partial coupling, where some secondary effects from reflected waves propagating through soil are disregarded, and full coupling, where the vehicle–track–soil–structure is modelled as a fully coupled system. Both proposed solution procedures offer a one-step approach for solving the whole system in the frequency–spatial domain. The usage of the model is demonstrated in two example cases: one analysing a simple building structure near a railway track, using the partial coupling solution procedure, and another one analysing the behaviour of a vehicle model traversing over a rigid block embedded inside the soil, using the full coupling solution procedure. The introduced modelling approach offers a computationally efficient solution procedure, at the same time being applicable to a wide array of application cases.

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preprint_JSVrevised2_mixedFOR - Accepted Manuscript
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Accepted/In Press date: 7 July 2020
e-pub ahead of print date: 2 August 2020
Keywords: mixed frame of reference, soil–structure interaction, train induced vibration

Identifiers

Local EPrints ID: 443085
URI: http://eprints.soton.ac.uk/id/eprint/443085
ISSN: 0022-460X
PURE UUID: 4414fa0a-9513-443e-8734-6147edf65263
ORCID for Evangelos Ntotsios: ORCID iD orcid.org/0000-0001-7382-0948
ORCID for David Thompson: ORCID iD orcid.org/0000-0002-7964-5906

Catalogue record

Date deposited: 10 Aug 2020 16:30
Last modified: 28 Apr 2022 05:54

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Contributors

Author: Paulius Bucinskas
Author: David Thompson ORCID iD
Author: Lars Vabbersgaard Andersen

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