BS EN ISO 10846-4-2003 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Dynamic stiffness of elements other than resil.pdf

1、BRITISH STANDARD BS EN ISO 10846-4:2003 Incorporating Corrigendum No. 1 Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements Part 4: Dynamic stiffness of elements other than resilient supports for translatory motion The European Standard EN ISO 1

2、0846-4:2003 has the status of a British Standard ICS 17.140.01 BS EN ISO 10846-4:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 October 2003 BSI 24 November 2003 ISBN 0 580 42809 5 National foreword This British Standard is the offic

3、ial English language version of EN ISO 10846-4:2003. It is identical with ISO 10846-4:2003. The UK participation in its preparation was entrusted by Technical Committee EH/1, Acoustics, to Subcommittee EH/1/4, Machinery noise, which has the responsibility to: A list of organizations represented on t

4、his subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by

5、using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunit

6、y from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in

7、 the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 33, the Annex ZA, an inside back cover and a back cover. The BSI copyright notice displayed in this doc

8、ument indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14873 Corrigendum No. 1 24 November 2003 Correction to the EN ISO Foreword page and addition of the Annex ZA pageEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO108464 September2003 ICS1

9、7.140.01 Englishversion AcousticsandvibrationLaboratorymeasurementofvibro acoustictransferpropertiesofresilientelementsPart4: Dynamicstiffnessofelementsotherthanresilientsupportsfor translatorymotion(ISO108464:2003) AcoustiqueetvibrationsMesurageenlaboratoiredes propritsdetransfertvibroacoustiquedes

10、lments lastiquesPartie4:Raideurdynamiqueentranslationdes lmentsautresquelessupportslastiques(ISO10846 4:2003) AkustikundSchwingungstechnikLaborverfahrenzur MessungdervibroakustischenTransfereigenschaften elastischerElementeTeil4:Bestimmungder dynamischenTransfersteifigkeitvonelastischenElementen mit

11、AusnahmeelastischerSttzelementefrtranslatorische Schwingungen(ISO108464:2003) ThisEuropeanStandardwasapprovedbyCENon1August2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.U

12、ptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsown

13、languageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlanda

14、ndUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO108464:2003ECORRECTED20031029 Forewo

15、rd Thisdocument(ENISO108464:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC43 “Acoustics“incollaborationwithTechnicalCommitteeCEN/TC211“Acoustics“,thesecretariat ofwhichisheldbyDS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthel

16、atestbyMarch2004,andconflictingnational standardsshallbewithdrawnatthelatestbyMarch2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,

17、Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO108464:2003hasbeenapprovedbyCENasENISO108464:2003withoutany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZ

18、A(normative). ENISO108464:2003 Reference number ISO 10846-4:2003(E)INTERNATIONAL STANDARD ISO 10846-4 First edition 2003-09-01 Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements Part 4: Dynamic stiffness of elements other than resilient support

19、s for translatory motion Acoustique et vibrations Mesurage en laboratoire des proprits de transfert vibro-acoustique des lments lastiques Partie 4: Raideur dynamique en translation des lments autres que les supports lastiques ENISO108464:2003IS-64801 O4:(3002E) DPlcsid Fremia ihTs PDF file mya ctnoi

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23、se specified, on trap fo this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mceinahcla, incliduntohp gcoiypodna gn micrfoilm, wittuoh repmissii now nritign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotfo yr ttseuqer ehe.r ISO cirypothg f

24、ofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.o gro We bwww.is.o groii ENISO108464:2003 iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references. 2 3 Terms and definitions. 3 4 Principles. 5 5 Test arrangements 6 5.1 Gen

25、eral. 6 5.2 Local coordinate systems 6 5.3 Test rig components. 6 5.4 Suppression of unwanted vibrations 8 6 Criteria for adequacy of the test arrangement.19 6.1 Frequency range. 19 6.2 Measurement of blocking force in the direct method . 20 6.3 Determination of upper frequency limit f 3in the indir

26、ect method . 20 6.4 Flanking transmission 23 6.5 Unwanted input vibrations. 23 6.6 Accelerometers. 24 6.7 Force transducers. 24 6.8 Summation of signals. 24 6.9 Analysers. 25 7 Test procedures 25 7.1 Installation of the test elements 25 7.2 Selection of force measurement system and force distributio

27、n plates 25 7.3 Mounting and connection of accelerometers 25 7.4 Mounting and connection of the vibration exciter 25 7.5 Source signal. 26 7.6 Measurements. 26 7.7 Test for linearity 27 8 Evaluation of test results . 28 8.1 Evaluation of dynamic transfer stiffness for direct method. 28 8.2 Calculati

28、on of dynamic transfer stiffness for indirect method 28 8.3 One-third-octave-band values of the frequency-averaged dynamic transfer stiffness. 28 8.4 Presentation of one-third-octave-band results 29 8.5 Presentation of narrow-band data. 30 9 Information to be recorded 30 10 Test report 31 Annex A (i

29、nformative) Transfer stiffness related to rotatory vibration components 32 Bibliography . 33 ENISO108464:2003iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards

30、is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take pa

31、rt in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to

32、prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility th

33、at some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10846-4 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise, in collaboration with ISO/TC 108, Mechanical

34、vibration and shock. ISO 10846 consists 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: Dynamic stiffness of elastic supports for translatory motion D

35、irect method 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 the determination of the low frequency dynamic stif

36、fness of elastic supports for translatory motion ENISO108464:2003 vIntroduction Passive vibration isolators of various kinds are used to reduce the transmission of vibrations. Examples are automobile engine mounts, resilient supports for buildings, resilient mounts and flexible shaft couplings for s

37、hipboard machinery, and small isolators in household appliances. This part of ISO 10846 specifies a direct and an indirect method for measuring the dynamic transfer stiffness function of linear resilient elements (other than resilient supports) such as resilient bellows, hoses, shaft couplings, powe

38、r supply cables and pipe hangers. This part of ISO 10846 belongs to a series of International Standards on methods for the laboratory measurement of the vibro-acoustic properties of resilient elements, which also includes documents on measurement principles and on a direct, an indirect and a driving

39、 point method for resilient supports. ISO 10846-1 provides global guidance for the selection of the appropriate International Standard. The laboratory conditions described in this part of ISO 10846 include the application of static preload, where appropriate. The results of the method described in t

40、his part of ISO 10846 are useful for resilient elements that are used to reduce the transmission of structure-borne sound (primarily frequencies above 20 Hz). The method does not characterize completely elements that are used to attenuate low-frequency vibration or shock excursions. ENISO108464:2003

41、INTENRATIONAL TSANDADR IS-64801 O4:(3002E)1Acoustics and vibration Laboratory measurement of vibro- acoustic transfer properties of resilient elements Part 4: Dynamic stiffness of elements other than resilient supports for translatory motion 1 Scope This part of ISO 10846 specifies two methods for d

42、etermining the dynamic transfer stiffness for translations of resilient elements other than resilient supports. Examples are resilient bellows, shaft couplings, power supply cables, hoses and pipe hangers (see Figure 1). Elements filled with liquids, such as oil or water, are excluded. NOTE 1 Pipe h

43、angers are extensionally deflected, as opposed to elastic supports which are compressed. Therefore, the test conditions are different from those described in ISO 10846-2 and ISO 10846-3. The methods are applicable to resilient elements with flat flanges or flat clamp interfaces. It is not necessary

44、that the flanges be parallel. Resilient elements which are the subject of this part of ISO 10846 are those that are used to reduce a) the transmission of audiofrequency vibrations (structure-borne sound, 20 Hz to 20 kHz ) to a structure which may, for example, radiate unwanted sound (airborne, water

45、borne or other), and b) the transmission of low-frequency vibrations (typically 1 Hz to 80 Hz), which may, for example, act upon human subjects or cause damage to structures of any size when the vibration is too severe. In practice, the size of the available test rig(s) determines restrictions for v

46、ery small and for very large resilient elements. Measurements for translations normal and transverse to the flanges or clamp interfaces are covered in this part of ISO 10846. Annex A provides guidance for the measurement of transfer stiffnesses that include rotatory components. The direct method can

47、 be applied in the frequency range from 1 Hz up to a frequency that is usually determined by the lowest resonance frequency of the test arrangement frame (typically 300 Hz for test rigs with dimensions of the order of 1 m). NOTE 2 In practice, the lower frequency limit depends on the dynamic excitat

48、ion system. The indirect method covers a frequency range that is determined by the test set-up and the isolator under test. The range is typically from a lower frequency between 20 Hz and 50 Hz, to an upper frequency between 2 kHz and 5 kHz. The data obtained according to the methods specified in this part of ISO 10846 can