Static and Dynamic Characteristics of Resilient Mats for Vibration Isolation of Railway Tracks

Abstract. The paper presents systematization and description of vibroacoustic isolators used in railway tracks (due to track structure type), with special attention paid to resilient mats. As in the second part of the paper the state-space mechanical model of a system with Under-Ballast Mat is formulated. Also some numerical problems arising from the mass matrix singularity are discussed. The poles of the system were calculated by using Matlab. Moreover, the influence of various parameters on the system's insertion loss and its transmissibility was visualized in figures.

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“…Characteristics of resilient mats important for vibration isolation and their test methods were given in standard [3,4] and [8,9,10].…”

Section: Fig 3 Application Areas Of Vibroacoustic Isolators In Railmentioning

confidence: 99%

Mechanical modelling and application of vibroacoustic isolators in railway tracks

et al. 2017

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“…Due to the fact that the structure's foundations are in the vicinity of the railway tracks, the threat that vibration induced by the passage of trains would transfer to the structure and cause excessive oscillations of the object's structural members loomed [1][2][3][4][5][6]. To prevent these complications, in the early stages of construction the design of the railway tracks was changed and under-ballast mats were used (see [7,8]); they were made of composite damping material which provided high vibration isolation. However, there was still no assurance that this solution would provide the desired results.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Forum Gdansk Structure due to Rail Traffic

Miśkiewicz

Pyrzowski

Rucka

et al. 2017

Archives of Civil Engineering

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This paper presents the study of the impact of vibration induced by the movement of the railway rolling stock on the Forum Gdańsk structure. This object is currently under construction and is located over the railway tracks in the vicinity of the Gdańsk Główny and Gdańsk Śródmieście railway stations. The analysis covers the influence of vibrations on the structure itself and on the people within. The in situ measurements on existing parts of the structure allow us to determine environmental excitations used for validation and verification of the derived FEM model. The numerical calculations made the estimates of the vibration amplitudes propagating throughout the whole structure possible.

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“…Detailed description of various categories of resilient mats is given in our previous paper [12]. As it was emphasized in [12], there are no European standards, which would define the requirements, methodology of research and calculation for resilient mats in railway tracks.…”

Section: Introductionmentioning

confidence: 99%

“…As it was emphasized in [12], there are no European standards, which would define the requirements, methodology of research and calculation for resilient mats in railway tracks. Thus, it is substantiated to use German Standards: DIN 45673-1 [1], DIN 45673-4 [2], DIN 45673-5 [3] and DIN 45673-7 [4].…”

Section: Introductionmentioning

confidence: 99%

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Viscoelastic dynamic models of resilient elements used in railway tracks

et al. 2016

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Abstract. The paper presents selected theoretical aspects concerning viscoelastic dynamic modelling of resilient elements used in railway tracks. In order to characterize the research methodology for resilient mats in railway tracks, German Standards [1-4] are used herein. The main goal of the paper is to demonstrate the procedure of insertion loss calculation for a single degree of freedom truck system containing under-ballast mats. Selected results of certain dynamic characteristics of resilient truck systems (transmissibility, Bode and Nyquist plots etc.) are also discussed. The results of calculations visualized in graphs, were obtained by using own applications written in programming language MATLAB.

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Static and Dynamic Characteristics of Resilient Mats for Vibration Isolation of Railway Tracks

Cited by 22 publications

References 2 publications

Mechanical modelling and application of vibroacoustic isolators in railway tracks

Mechanical modelling and application of vibroacoustic isolators in railway tracks

Dynamic Response of Forum Gdansk Structure due to Rail Traffic

Viscoelastic dynamic models of resilient elements used in railway tracks

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