NF EN ISO 10846-5

NF EN ISO 10846-5

May 2009
Standard Current

Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 5 : driving point method for determination of the low-frequency transfer stiffness of resilient supports for translatory motion

ISO 10846-5:2008 specifies a driving point method for determining the low-frequency transfer stiffness for translations of resilient supports, under a specified preload. The method concerns the laboratory measurement of vibrations and forces on the input side with the output side blocked, and is called the “driving point method”.The stiffness resulting from measuring the input displacement (velocity, acceleration) and input force is the dynamic driving point stiffness. Only at low frequencies, where the driving point stiffness and the transfer stiffness are equal, can this method be used for determination of the dynamic transfer stiffness. The method is applicable to test elements with parallel flanges.

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National standards and national normative documents

Publication date

May 2009

Number of pages

37 p.

Reference

NF EN ISO 10846-5

ICS Codes

17.140.01   Acoustic measurements and noise abatement in general

Classification index

S31-030-5

Print number

1 - 29/04/2009

International kinship

ISO 10846-5:2008

European kinship

EN ISO 10846-5:2009
Sumary
Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 5 : driving point method for determination of the low-frequency transfer stiffness of resilient supports for translatory motion

ISO 10846-5:2008 specifies a driving point method for determining the low-frequency transfer stiffness for translations of resilient supports, under a specified preload. The method concerns the laboratory measurement of vibrations and forces on the input side with the output side blocked, and is called the “driving point method”.

The stiffness resulting from measuring the input displacement (velocity, acceleration) and input force is the dynamic driving point stiffness. Only at low frequencies, where the driving point stiffness and the transfer stiffness are equal, can this method be used for determination of the dynamic transfer stiffness.

The method is applicable to test elements with parallel flanges.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    2
  • 3 Termes et définitions
    3
  • 4 Principe
    6
  • 5 Dispositifs d'essai
    6
  • 5.1 Translations normales
    6
  • 5.2 Translations transversales
    9
  • 5.3 Suppression des vibrations indésirables
    12
  • 6 Critères d'adéquation du dispositif d'essai
    12
  • 6.1 Exigences générales
    12
  • 6.2 Détermination de la fréquence limite supérieure
    13
  • 6.3 Transducteurs de force
    13
  • 6.4 Accéléromètres
    14
  • 6.5 Sommation des signaux
    14
  • 6.6 Analyseurs
    14
  • 7 Modes opératoires d'essai
    14
  • 7.1 Choix du système de mesurage des forces et des plaques de répartition des forces
    15
  • 7.2 Installation de l'élément d'essai
    14
  • 7.3 Montage et connexion des accéléromètres
    15
  • 7.4 Montage et connexions de l'excitateur de vibrations
    15
  • 7.5 Signal source
    15
  • 7.6 Mesurages
    16
  • 7.7 Test de linéarité
    17
  • 8 Évaluation des résultats d'essai
    18
  • 8.1 Calcul de la raideur dynamique au point d'application
    18
  • 8.2 Valeurs par bandes de tiers d'octave de la raideur dynamique au point d'application moyennée en fréquence
    18
  • 8.3 Valeurs par bandes de tiers d'octave de la raideur dynamique de transfert moyennée en fréquence
    18
  • 8.4 Présentation des résultats par bandes de tiers d'octave
    19
  • 8.5 Présentation des données de l'analyse à bande étroite
    20
  • 9 Informations à consigner
    20
  • 10 Rapport d'essai
    22
  • Annexe A (informative) Courbe charge statique-déformation
    23
  • Annexe B (informative) Incertitude de mesure
    24
  • Bibliographie
    29
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