DIN EN ISO 10846-1-2008 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 1 Principles and guidelines (ISO 10846-1.pdf

1、November 2008DEUTSCHE NORM English price group 14No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.140.01; 17.160!$Rx

2、+“1478508www.din.deDDIN EN ISO 10846-1Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties ofresilient elements Part 1: Principles and guidelines (ISO 10846-1:2008)English version of DIN EN ISO 10846-1:2008-11Akustik und Schwingungstechnik Laborverfahren zur Messung d

3、er vibro-akustischen Transfereigenschaften elastischerElemente Teil 1: Grundlagen und bersicht (ISO 10846-1:2008)Englische Fassung DIN EN ISO 10846-1:2008-11SupersedesDIN EN ISO 10846-1:1999-04www.beuth.deDocument comprises 32 pagesDIN EN ISO 10846-1:2008-11 2 National foreword This standard has bee

4、n prepared by Technical Committee ISO/TC 43 “Acoustics”, Subcommittee SC 1 “Noise”, and Technical Committee ISO/TC 108 “Mechanical vibration, shock and condition monitoring” in collaboration with Technical Committee CEN/TC 211 “Acoustics” (Secretariat: DS, Denmark). The responsible German body invol

5、ved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Technical Committee VDI/NALS C 20 Schwingungs- und Storeduzierung Verfahren und Elemente. ISO 10846 cons

6、ists of the following parts, under the general title Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements: Part 1: Principles and guidelines Part 2: Direct method for determination of the dynamic stiffness of resilient supports for translatory mo

7、tion Part 3: Indirect method for determination of the dynamic stiffness of resilient supports for translatory motion Part 4: Dynamic stiffness of elements other than resilient supports for translatory motion Part 5: Driving point method for determination of the low-frequency transfer stiffness of re

8、silient supports for translatory motion The DIN Standards corresponding to the International Standards and other documents referred to in the ISO Standard are as follows: ISO 10846 standards series DIN EN ISO 10846 standards series ISO/IEC Guide 98-3 DIN V ENV 13005 Amendments This standard differs

9、from DIN EN ISO 10846-1:1999-04 as follows: a) The text of the standard has been brought into line with ISO 10846-2:2008 and ISO 10846-5:2008, in particular with regard to measurement uncertainty and upper limiting frequency. b) The figures have been revised. Previous editions DIN EN ISO 10846-1: 19

10、99-04 DIN EN ISO 10846-1:2008-11 3 National Annex NA (informative) Bibliography DIN V ENV 13005, Guide to the expression of uncertainty in measurement DIN EN ISO 10846, standards series, Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements DIN EN

11、 ISO 10846-1:2008-11 4 This page is intentionally blank EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10846-1August 2008ICS 17.140.01 Supersedes EN ISO 10846-1:1998 English VersionAcoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - P

12、art 1:Principles and guidelines (ISO 10846-1:2008)Acoustique et vibrations - Mesurage en laboratoire desproprits de transfert vibro-acoustique des lments10846-1:2008)Akustik und Schwingungstechnik - Laborverfahren zurMessung der vibro-akustischen Transfereigenschaftenelastischer Elemente - Teil 1: G

13、rundlagen und bersicht(ISO 10846-1:2008)This European Standard was approved by CEN on 12 April 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-t

14、o-date lists and bibliographical references concerning such nationalstandards 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 translationunder

15、the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hunga

16、ry, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue

17、 de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10846-1:2008: Elastiques - Partie 1: Principes et lignes directrices (ISOContents Page 2 DIN EN ISO 10846-1:2008-11 EN ISO 10846-1:2008 (E) For

18、eword 3 Introduction 4 1 Scope .5 2 Normative references .5 3 Terms and definitions 6 4 Selection of appropriate International Standard .8 5 Theoretical background .8 5.1 Dynamic transfer stiffness 8 5.2 Dynamic stiffness matrix of resilient elements .9 5.3 Number of relevant blocked transfer stiffn

19、esses .11 5.4 Flanking transmission .12 5.5 Loss factor 12 6 Measurement principles 13 6.1 Dynamic transfer stiffness 13 6.2 Direct method .13 6.3 Indirect method .15 6.4 Driving point method .18 Annex A (informative) Functions related to dynamic stiffness .20 Annex B (informative) Effect of symmetr

20、y an the transfer stiffness matrix 21 Annex C (informative) Simplified transfer stiffness matrices .24 Annex D (informative) Linearity of resilient elements 26 Bibliography .27 Foreword 3 DIN EN ISO 10846-1:2008-11 EN ISO 10846-1:2008 (E) This document (EN ISO 10846-1:2008) has been prepared by Tech

21、nical Committee ISO/TC 43 “Acoustics“ in collaboration with Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Febru

22、ary 2009, and conflicting national standards shall be withdrawn at the latest by February 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such paten

23、t rights. This document supersedes EN ISO 10846-1:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fra

24、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10846-1:2008 has been approved by CEN as a EN ISO 10

25、846-1:2008 without any modification. Introduction Passive vibration isolators of various kinds are used to reduce the transmission of vibrations. Examples include automobile engine mounts, resilient supports for buildings, resilient mounts and flexible shaft couplings for shipboard machinery and sma

26、ll isolators in household appliances. This part of ISO 10846 serves as an introduction and a guide to ISO 10846-2, ISO 10846-3, ISO 10846-4 and ISO 10846-5, which describe laboratory measurement methods for the determination of the most important quantities which govern the transmission of vibration

27、s through linear resilient elements, i.e. frequency-dependent dynamic transfer stiffnesses. This part of ISO 10846 provides the theoretical background, the principles of the methods, the limitations of the methods, and guidance for the selection of the most appropriate standard of the series. The la

28、boratory conditions described in all parts of ISO 10846 include the application of static preload, where appropriate. The results of the methods are useful for resilient elements, which are used to prevent low-frequency vibration problems and to attenuate structure-borne sound. However, for complete

29、 characterization of resilient elements that are used to attenuate low-frequency vibration or shock excursions, additional information is needed, which is not provided by these methods. 4 DIN EN ISO 10846-1:2008-11 EN ISO 10846-1:2008 (E) 1 Scope This part of ISO 10846 explains the principles underl

30、ying ISO 10846-2, ISO 10846-3, ISO 10846-4 and ISO 10846-5 for determining the transfer properties of resilient elements from laboratory measurements, and provides assistance in the selection of the appropriate part of this series. It is applicable to resilient elements that are used to reduce a) th

31、e transmission of audio frequency vibrations (structure-borne sound, 20 Hz to 20 kHz) to a structure which may, for example, radiate fluid-borne sound (airborne, waterborne, or other), and b) the transmission of low-frequency vibrations (typically 1 Hz to 80 Hz), which may, for example, act upon hum

32、an subjects or cause damage to structures of any size when the vibration is too severe. The data obtained with the measurement methods, which are outlined in this part of ISO 10846 and further detailed in ISO 10846-2, ISO 10846-3, ISO 10846-4 and ISO 10846-5, can be used for product information prov

33、ided by manufacturers and suppliers, information during product development, quality control, and calculation of the transfer of vibrations through resilient elements. The conditions for the validity of the measurement methods are a) linearity of the vibrational behaviour of the resilient elements (

34、this includes elastic elements with non-linear static load-deflection characteristics, as long as the elements show approximate linearity for vibrational behaviour for a given static preload), and b) the contact interfaces of the vibration isolator with the adjacent source and receiver structures ca

35、n be considered as point contacts. 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)

36、applies. ISO 2041:1), Mechanical vibration, shock and condition monitoring Vocabulary 1) To be published. (Revision of ISO 2041:1990) 5 DIN EN ISO 10846-1:2008-11 EN ISO 10846-1:2008 (E) ISO/IEC Guide 98-3 2), Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (

37、GUM 1995) 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2041 and the following apply. 3.1 vibration isolator resilient element isolator designed to attenuate the transmission of the vibration in a certain frequency range NOTE Adapted from ISO 2041:

38、1), definition 2.120. 3.2 resilient support vibration isolator(s) suitable for supporting a machine, a building or another type of structure 3.3 test element resilient element undergoing testing, including flanges and auxiliary fixtures, if any 3.4 blocking force Fbdynamic force on the output side o

39、f a vibration isolator which results in a zero displacement output 3.5 dynamic driving point stiffness k1,1frequency-dependent ratio of the force phasor F1on the input side of a vibration isolator with the output side blocked to the displacement phasor u1on the input side 1,111=/uFkNOTE 1 The subscr

40、ipts “1” denote that the force and displacement are measured on the input side. NOTE 2 The value of k1,1can be dependent on the static preload, temperature, relative humidity and other conditions. NOTE 3 At low frequencies, elastic and dissipative forces solely determine k1,1. At higher frequencies,

41、 inertial forces play a role as well. 3.6 dynamic driving point stiffness of inverted vibration isolator k2,2dynamic driving point stiffness, with the physical input and output sides of the vibration isolator interchanged NOTE At low frequencies, where elastic and dissipative forces solely determine

42、 the driving point stiffness, k1,1= k2,2. At higher frequencies inertial forces play a role as well and k1,1and k2,2will be different in case of asymmetry. 2) ISO/IEC Guide 98-3 will be published as a re-issue of the Guide to the expression of uncertainty in measurement (GUM), 1995. 6 DIN EN ISO 108

43、46-1:2008-11 EN ISO 10846-1:2008 (E) 3.7 dynamic transfer stiffness k2,1frequency-dependent ratio of the blocking force phasor F2,bon the output side of a resilient element to the displacement phasor u1on the input side 2,12,b 1=/uFkNOTE 1 The subscripts “1”and “2” denote the input and output sides,

44、 respectively. NOTE 2 The value of k2,1can be dependent on the static preload, temperature and other conditions. NOTE 3 At low frequencies, k2,1is mainly determined by elastic and dissipative forces and 1,1 2,1kk . At higher frequencies, inertial forces in the resilient element play a role as well a

45、nd 1,1 2,1kk . 3.8 loss factor of resilient element h ratio of the imaginary part of k2,1to the real part of k2,1, i.e. tangent of the phase angle of k2,1, in the low-frequency range where inertial forces in the element are negligible 3.9 point contact contact area which vibrates as the surface of a

46、 rigid body 3.10 linearity property of the dynamic behaviour of a resilient element, if it satisfies the principle of superposition NOTE 1 The principle of superposition can be stated as follows: if an input x1(t) produces an output y1(t) and in a separate test an input x2(t) produces an output y2(t

47、), superposition holds if the input a x1(t) + b x2(t) produces the output ay1(t) + b y2(t). This must hold for all values of a, b and x1(t), x2(t); a and b are arbitrary constants. NOTE 2 In practice, the above test for linearity is impractical and a limited check of linearity is performed by measur

48、ing the dynamic transfer stiffness for a range of input levels. For a specific preload, if the dynamic transfer stiffness is nominally invariant, the system can be considered linear. In effect, this procedure checks for a proportional relationship between the response and the excitation. 3.11 direct

49、 method method in which either the input displacement, velocity or acceleration and the blocking output force are measured 3.12 indirect method method in which the vibration transmissibility (for displacement, velocity or acceleration) of a resilient element is measured, with the output loaded by a compact body of known mass NOTE The term “indirect method” can be permitted to include loads of any known impedance other than a mass-like impedance. However, the ISO 10846 series does not cover such methods. 3.13 driving point method