Dynamic behaviour of railway fastening setting pads

Carrascal, I.; Casado, Julio; Polanco, J.A.; Gutiérrez‐Solana, F.

doi:10.1016/j.engfailanal.2006.02.003

Cited by 54 publications

(31 citation statements)

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“…A number of publications have recently addressed the dynamic characteristics of resilient pads (Remennikov AM, , submitted for publication) [11][12][13][14][15][16][17][18][19]. It is noted that some studies included a two-degree-of-freedom (2DOF) rail pad model [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

An Alternative Rail Pad Tester for Measuring Dynamic Properties of Rail Pads Under Large Preloads

Kaewunruen

Remennikov

2007

Exp Mech

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Kaewunruen, S. and Remennikov, A. M. (2008). An alternative rail pad tester for measuring dynamic properties of rail pads under large preloads. Experimental mechanics, 48 55-64. Abstract One of the main components in ballasted railway track systems is the rail pad. It is installed between the rail and the sleeper to attenuate wheel/rail interaction loads, preventing the underlying railway sleepers from excessive stress waves. Generally, the dynamic design of tracks relies on the available data, which are mostly focused on the structural condition at a specific toe load. Recent findings show that track irregularities could significantly amplify the loads on railway tracks. This phenomenon gives rise to a concern that the rail pads may experience higher effective preloading than anticipated in the past. On this ground, this paper highlights the significance of accounting for effects of preloading on dynamic properties of polymeric rail pads. An innovative test rig for controlling preloads on rail pads has been devised. A non-destructive methodology for evaluating and monitoring the dynamic properties of the rail pads has been developed based on an instrumented hammer impact technique and an equivalent single degreeof-freedom system approximation. Based on the impactexcitation responses, some of the selected rail pads have been tested to determine such modal parameters as dynamic stiffness and damping constants in the laboratory. The influence of large preloads on dynamic properties of both new and worn rail pads is demonstrated in this paper. Additionally, the design criteria, which has been used to take into account the influence of the level of preload on dynamic properties of generic rail pads, are discussed.

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Section: Introductionmentioning

confidence: 99%

An Alternative Rail Pad Tester for Measuring Dynamic Properties of Rail Pads Under Large Preloads

Kaewunruen

Remennikov

2007

Exp Mech

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“…Thus, Carrascal et al [63] evaluated the influence of temperature in the mechanical performance of TPE (thermoplastic elastomer) pads. They found that an increase of 30°C could lead to a reduction in the material stiffness of over 30%, this effect being more notable in the static response of the material.…”

Section: Cases and Studiesmentioning

confidence: 99%

The use of elastic elements in railway tracks: A state of the art review

Sol-Sánchez

Moreno-Navarro

Rubio-Gámez

2015

Construction and Building Materials

137

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“…The influence of the most significant factors on total noise levels generated by vehicles is shown in Table 2 [13]. The rail temperature, which can differ significantly from air temperature due to generation of heat, can also influence temperature of under rail pads and, hence, their stiffness, which is why rail temperature must be taken into account when estimating stiffness of the under rail pads [14].…”

Section: Noise and Vibrations Generated By Rail Trafficmentioning

confidence: 99%

Mjerenje stupnja prigušenja vibracija na klasičnim kolosiječnim konstrukcijama

2016

JCE

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The rail-track vibration damping level, as one of key properties for determining proportion of rail track influence in the total rail traffic noise and vibration levels, is estimated in the paper. A detailed overview of research conducted so far on dynamic properties of rail tracks is given, and the methods presented are compared on two test sections. The data processing method, various accelerometer positons, and various types of modal hammers as excitation sources, are also considered in the analysis of measurement results. The results obtained by various analyses are compared to each other so as to increase accuracy in the determination of the vibration damping level. Mjerenje stupnja prigušenja vibracija na klasičnim kolosiječnim konstrukcijama U radu se ocjenjuje stupanj prigušenja vibracija na kolosijecima, jednog od ključnih svojstava pri određivanju utjecaja kolosijeka u ukupnim razinama buke i vibracija od prometovanja tračničkih vozila. Prikazan je i detaljan pregled znanstvenih istraživanja na temu dinamičkih svojstava kolosijeka, a navedene metode uspoređene su na dvije ispitne lokacije. Nadalje, u analizi rezultata mjerenja razmatra se metoda obrade podataka, različite pozicije akcelerometara i različiti tipovi modalnih čekića kao izvora pobude. Rezultati dobiveni različitim analizama međusobno su uspoređeni u svrhu što preciznijeg određivanja stupnja prigušenja vibracija.

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Dynamic behaviour of railway fastening setting pads

Cited by 54 publications

References 0 publications

An Alternative Rail Pad Tester for Measuring Dynamic Properties of Rail Pads Under Large Preloads

An Alternative Rail Pad Tester for Measuring Dynamic Properties of Rail Pads Under Large Preloads

The use of elastic elements in railway tracks: A state of the art review

Mjerenje stupnja prigušenja vibracija na klasičnim kolosiječnim konstrukcijama

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