EN ISO 10846-5-2009 en Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 5 Driving point method for determination .pdf

1、BS EN ISO 10846-5:2009ICS 17.140.01; 17.160NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAcoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elementsPart 5: Driving point method for determination of the low-frequen

2、cy transfer stiffness of resilient supports for translatory motion (ISO 10846-5:2008)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 August2009 BSI 2009ISBN 978 0 580 53409 6Amendments/corrigenda issued since publicationDate CommentsBS EN ISO

3、10846-5:2009National forewordThis British Standard is the UK implementation of EN ISO 10846-5:2009. The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/4, Machinery noise.A list of organizations represented on this committee can be obtained onrequest to its secretary.Thi

4、s publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.It is identical to ISO 10846:2008.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN

5、 ISO 10846-5February 2009ICS 17.140.01; 17.160 English VersionAcoustics 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 mo

6、tion (ISO 10846-5:2008)Acoustique et vibrations - Mesurage en laboratoire des proprits de transfert vibro-acoustique des lments lastiques - Partie 5: Mthode du point dapplication pour la dtermination de la raideur dynamique de transfert basse frquence en translation des supports lastiques (ISO 10846

7、-5:2008)Akustik und Schwingungstechnik - Laborverfahren zur Messung der vibro-akustischen Transfereigenschaften elastischer Elemente - Teil 5: Ermittlung der Transfersteifigkeit elastischer Sttzelemente aus der Eingangssteifigkeit bei Anregung in translatorischer Richtung und tiefen Frequenzen (ISO

8、10846-5:2008)This European Standard was approved by CEN on 17 February 2009.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 biblio

9、graphical 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

10、 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irelan

11、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B

12、-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Ref. No. EN ISO 10846-5:2009: EBS EN ISO 10846-5:2009EN ISO 10846-5:2009 (E) 3 Foreword The text of ISO 10846-5:2008 has been prepared by Technical Committee ISO/TC 43 “Acousti

13、cs” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 10846-5:2009 by 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 id

14、entical text or by endorsement, at the latest by August 2009, and conflicting national standards shall be withdrawn at the latest by August 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

15、 responsible for identifying any or all such patent rights. 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,

16、 France, 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 10846-5:2008 has been approved by CEN as a EN IS

17、O 10846-5:2009 without any modification. BS EN ISO 10846-5:2009ISO 10846-5:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 2 3 Terms and definitions. 3 4 Principle. 5 5 Test arrangements 6 5.1 Normal translations 6 5.2 Transverse

18、translations . 7 5.3 Suppression of unwanted vibrations 8 6 Criteria for adequacy of the test arrangement. 11 6.1 General requirements. 11 6.2 Determination of upper limiting frequency 12 6.3 Force transducers. 12 6.4 Accelerometers . 12 6.5 Summation of signals. 13 6.6 Analysers. 13 7 Test procedur

19、es 13 7.1 Selection of force measurement system and force distribution plates 13 7.2 Installation of the test element 13 7.3 Mounting and connection of accelerometers 14 7.4 Mounting and connections of the vibration exciter 14 7.5 Source signal 14 7.6 Measurements. 14 7.7 Test for linearity 15 8 Eva

20、luation of test results . 16 8.1 Calculation of dynamic driving-point stiffness . 16 8.2 One-third-octave-band values of the frequency-averaged dynamic driving-point stiffness 17 8.3 One-third-octave-band values of the frequency-averaged transfer stiffness 17 8.4 Presentation of one-third-octave-ban

21、d results 17 8.5 Presentation of narrow-band data 18 9 Information to be recorded 19 10 Test report . 20 Annex A (informative) Static load-deflection curve 21 Annex B (informative) Measurement uncertainty . 22 Bibliography . 26 BS EN ISO 10846-5:2009ISO 10846-5:2008(E) iv ISO 2008 All rights reserve

22、dForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a

23、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 part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matter

24、s 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 prepare International Standards. Draft International Standards adopted by the technical committees are circulat

25、ed 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 that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible

26、 for identifying any or all such patent rights. ISO 10846-5 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise, and ISO/TC 108, Mechanical vibration, shock and condition monitoring. ISO 10846 consists of the following parts, under the general title Acoustics and vibra

27、tion 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 motion Part 3: Indirect method for determination of the dynamic stiffness

28、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 resilient supports for translatory motion BS EN ISO 10846-5:2009ISO 10846-

29、5:2008(E) ISO 2008 All rights reserved vIntroduction Passive vibration isolators of various kinds are used to reduce the transmission of vibration. Examples are automobile engine mounts, resilient supports for buildings, resilient mounts and flexible shaft couplings for shipboard machinery and small

30、 isolators in household appliances. This part of ISO 10846 specifies a driving point method for measuring the low-frequency dynamic transfer stiffness function of linear resilient supports. This includes resilient supports with non-linear static load-deflection characteristics provided that the elem

31、ents show an approximate linearity for vibration behaviour for a given static preload. This part of ISO 10846 belongs to a series of International Standards on methods for the laboratory measurement of vibro-acoustic properties of resilient elements, which also includes documents on measurement prin

32、ciples, on a direct method and on an indirect method. 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 metho

33、d described in this part of ISO 10846 are useful for resilient supports that are used to prevent low-frequency vibration problems and to attenuate structure-borne sound in the lower part of the audible frequency range. However, for complete characterization of resilient elements that are used to att

34、enuate low-frequency vibration or shock excursions, additional information is needed, which is not provided by this method. BS EN ISO 10846-5:2009BS EN ISO 10846-5:2009INTERNATIONAL STANDARD ISO 10846-5:2008(E) ISO 2008 All rights reserved 1Acoustics and vibration Laboratory measurement of vibro-aco

35、ustic transfer properties of resilient elements Part 5: Driving point method for determination of the low-frequency transfer stiffness of resilient supports for translatory motion 1 Scope This part of ISO 10846 specifies a driving point method for determining the low-frequency transfer stiffness for

36、 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, a

37、cceleration) 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. NOTE 1 In ISO 10846-2, the direct method for measuring th

38、e dynamic transfer stiffness is covered. The direct method covers the determination of the low-frequency dynamic transfer stiffness and it covers, in principle, a wider frequency range than the driving point method. Nevertheless, the driving point method is covered in the ISO 10846 series of interna

39、tional standards as well. It is considered as a valuable option for owners of (often expensive) test rigs for driving point stiffness measurements, to extend the use of these rigs with the determination of low-frequency dynamic transfer stiffness. The method is applicable to test elements with paral

40、lel flanges (see Figure 1). Resilient elements, which are the subject of this part of ISO 10846, are those which are used to reduce a) the transmission of vibration in the lower part of the audible frequency range (typically 20 Hz to 200 Hz) to a structure which may, for example, radiate unwanted fl

41、uid-borne sound (airborne, waterborne or others), 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 vibration is too severe. NOTE 2 In practice, the size of available test rig(s

42、) determines restrictions for very small and for very large resilient supports. NOTE 3 Samples of continuous supports of strips and mats are included in the method. Whether or not the sample describes the behaviour of the complex system sufficiently is the responsibility of the user of this part of

43、ISO 10846. Measurements for translations normal and transverse to the flanges are covered in this part of ISO 10846. The method covers the frequency range from f1= 1 Hz to the upper limiting frequency fUL. Typically 50 Hz u fULu 200 Hz. The data obtained according to the method specified in this par

44、t of ISO 10846 can be used for the following: product information provided by manufacturers and suppliers; BS EN ISO 10846-5:2009ISO 10846-5:2008(E) 2 ISO 2008 All rights reserved information during product development; quality control, and calculation of the transfer of vibration through isolators.

45、 NOTE 1 When a resilient support has no parallel flanges, an auxiliary fixture should be included as part of the test element to arrange for parallel flanges. NOTE 2 Arrows indicate load direction. Figure 1 Example of resilient supports with parallel flanges 2 Normative references The following refe

46、renced 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. ISO 266, Acoustics Preferred frequencies ISO 2041:1), Mechanical vi

47、bration, shock and condition monitoring Vocabulary ISO 5348, Mechanical vibration and shock Mechanical mounting of accelerometers ISO 7626-1, Vibration and shock Experimental determination of mechanical mobility Part 1: Basic definitions and transducers ISO 10846-1, Acoustics and vibration Laborator

48、y measurement of vibro-acoustic transfer properties of resilient elements Part 1: Principles and guidelines ISO 16063-21, Methods for the calibration of vibration and shock transducers Part 21: Vibration calibration by comparison to a reference transducer ISO/IEC Guide 98-32), Uncertainty of Measure

49、ment Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) 1) To be published. (Revision of ISO 2041:1990) 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. BS EN ISO 10846-5:2009ISO 10846-5:2008(E) ISO 2008 All rights reserved 33 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 design