EN 15461:2008+A1:2010
(Main)Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
This European Standard specifies a method for characterizing the dynamic behaviour of the structure of a track relative to its contribution to the sound radiation associated with the rolling noise.
This European Standard describes a method for:
a) acquiring data on mechanical frequency response functions on a track;
b) processing measurement data in order to calculate an estimate of the vibration decay rates along the rails in an audible frequency range associated with the rolling noise;
c) presenting this estimate for comparison with the lower limits of the decay rates.
It is applicable for evaluating the performance of sections of reference tracks for measuring railway vehicle noise within the framework of official approval tests.
The method is not applicable for characterizing the vibration behaviour of tracks on loadbearing structures such as bridges or embankments.
Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für Vorbeifahrtgeräuschmessungen
Diese Europäische Norm legt ein Verfahren zur Charakterisierung des dynamischen Verhaltens eines Gleises bezüglich seines Beitrags zum Rollgeräusch fest.
Diese Europäische Norm beschreibt ein Verfahren zur:
a) Erhebung von Daten zur Impulsantwort eines Gleises;
b) Weiterverarbeitung der Messdaten zur Abschätzung der Körperschallabklingraten in Gleislängsrichtung im akustisch wahrnehmbaren und auf die Rollgeräusche zurückzuführenden Frequenzbereich;
c) Darstellung dieses Schätzwertes für eine Bewertung im Vergleich mit unteren Grenzkurven der Abklingrate.
Diese Norm ist anwendbar für die Prüfung der Eignung von Referenzgleisabschnitten zur Messung der Schallemission von Schienenfahrzeugen im Rahmen von Bauartzulassungsprüfungen.
Dieses Verfahren gilt nicht für die Charakterisierung des Schwingungsverhaltens von Gleisen auf Kunstbauten wie Brücken oder Dämmen.
Applications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passage
La présente Norme Européenne spécifie une méthode de caractérisation du comportement dynamique de la
structure d’une voie, relativement à sa contribution au rayonnement sonore associée au bruit de roulement.
Cette Norme Européenne présente une méthode pour :
a) l’acquisition de données de fonctions de réponse en fréquence mécanique sur une voie ;
b) le traitement des données de mesurage en vue de calculer une estimation des taux de décroissance des
vibrations le long des rails dans une gamme de fréquences audibles associées au bruit de roulement ;
c) la présentation de cette estimation pour comparaison avec des limites inférieures de taux de décroissance.
Elle est applicable pour évaluer les performances de sections de voies de référence pour le mesurage du bruit des
véhicules ferroviaires dans le cadre d’essais d’homologation.
La méthode n’est pas applicable pour caractériser le comportement vibratoire de voies sur des structures porteuses
comme les ponts ou les remblais.
Železniške naprave - Hrup - Opis dinamičnih lastnosti tirnega odseka za merjenje hrupa vozečih vlakov
Ta evropski standard določa metodo za opis dinamičnih lastnosti strukture tirov glede na njen prispevek k zvočni radiaciji, povezani s kotalnim hrupom. Ta evropski standard opisuje metodo za: a) pridobivanje podatkov o mehanskih frekvenčno odzivnih funkcijah na tirih; b) obdelavo podatkov meritev za izračun ocene hitrosti zamiranja vibracij po tirih v slišnem frekvenčnem območju, povezanem s kotalnim hrupom; c) predstavitev te ocene primerjalno s spodnjimi mejami hitrosti zamiranja. Velja za ocenjevanje delovanja odsekov referenčnih tirov za merjenje hrupa železniških vozil v okviru uradnih homologacijskih preskusov. Metoda se ne uporablja za opis lastnosti vibracij tirov na nosilnih konstrukcijah, kot so mostovi ali nasipi.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für VorbeifahrtgeräuschmessungenApplications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passageRailway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements45.060.01Železniška vozila na splošnoRailway rolling stock in general17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 15461:2008+A1:2010SIST EN 15461:2008+A1:2010en,fr,de01-december-2010SIST EN 15461:2008+A1:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15461:2008+A1
November 2010 ICS 17.140.30; 93.100 Supersedes EN 15461:2008English Version
Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
Applications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passage
Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für Vorbeifahrtgeräuschmessungen This European Standard was approved by CEN on 28 December 2007 and includes Amendment 1 approved by CEN on 28 September 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15461:2008+A1:2010: ESIST EN 15461:2008+A1:2010
Calculation of the decay rates . 14A.1General . 14A.2Calculation of the decay rates . 14Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)"""" . 16Bibliography . 18 SIST EN 15461:2008+A1:2010
The vibration response of the track structure determines the level of its sound contribution to this noise. The method assumes that the vibration waves in the rail can be regarded as the superposition of two bending waves, one vertical and the other transverse, of the rail represented as a simple beam.
Although the track rail does not behave in this way over all the frequencies covered by the measurement, this simplification permits the "decay rates" to be measured for an estimation of the dynamic behaviour of the track which is one of the basic parameters influencing the generation of rolling noise. 1 Scope This European Standard specifies a method for characterizing the dynamic behaviour of the structure of a track relative to its contribution to the sound radiation associated with the rolling noise. This European Standard describes a method for: a) acquiring data on mechanical frequency response functions on a track; b) processing measurement data in order to calculate an estimate of the vibration decay rates along the rails in an audible frequency range associated with the rolling noise; c) presenting this estimate for comparison with the lower limits of the decay rates. It is applicable for evaluating the performance of sections of reference tracks for measuring railway vehicle noise within the framework of official approval tests. The method is not applicable for characterizing the vibration behaviour of tracks on loadbearing structures such as bridges or embankments. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies EN 61260, Electroacoustics — Octave-band and fractional-octave-band filters (IEC 61260:1995) EN ISO 266, Acoustics — Normal frequencies (ISO 266:1997) EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005) ISO 2041, Vibration and shock — Vocabulary ISO 7626-1, Vibration and shock — Experimental determination of mechanical mobility — Part 1: Basic definitions and transducers
ISO 7626-1)
NOTE 1
In this document, the term also refers to the mean spectral amplitude of the FRF in the form of a one-third octave spectrum. NOTE 2
In this standard, the term frequency-response function (FRF) is used to refer generically either to accelerance (accelerometric response/excitation force) or to mobility (speed response/excitation force). The term is not used to refer to receptance (dynamic compliance).
NOTE 3 The FRF is generally calculated as the interspectrum ratio between the response and the force with the autospectrum.
This estimate of the FRF is called estimate H1. NOTE 4 A set of FRF between a single excitation point and multiple response points or even between a single response point and multiple excitation points may be used.
In this standard, the case of a fixed accelerometer and a mobile instrumented excitation hammer is the easiest to implement.
3.2 accelerance complex ratio of the acceleration at one point in a mechanical system to the force at the same point or at a different point during a single harmonic motion (see also ISO 7626-1 and ISO 2041)
NOTE
Accelerance is an FRF currently expressed as a narrow-band complex spectrum.
It is also used in this standard to express a one-third octave spectrum.
3.3 mobility complex ratio of the speed at one point in a mechanical system to the force at the same point or at a different point during a single harmonic motion (see also ISO 7626-1 and ISO 2041)
NOTE
Mobility is an FRF currently expressed as a narrow-band complex spectrum.
It is also used in this standard to express a one-third octave spectrum.
3.4 direct FRF, FRF at the point of application FRF for which the response is measured at the same position (as close as possible physically with an impact hammer and an accelerometer) and the same direction (see also ISO 7626-1)
NOTE
In this standard, the term refers both to force and response FRF in the vertical and transverse directions. 3.5 transfer FRF FRF for which the response amplitude is measured at a different position to the force application point
NOTE In order to define the FRF, the direction and position of the application force and the response should be mentioned.
section of track specifically associated with a particular set of measurement data
3.8 accelerometer position fixed position of the accelerometer(s) for which a complete set of FRF measurements is taken
3.9 structural wave
vibration wave that is propagated along the rail resulting in a deformation of the whole rail section
NOTE For example, vertical and transverse bending waves of the rail behaving like a beam or waves that involve deformation modes in the cross-section of the rail propagating along the rail.
The vibration waves with wavelengths that are smaller than the rail cross-section dimensions, such as the Rayleigh ultrasonic waves or the shear or comp
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