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

1、July 2009DEUTSCHE 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!$Xl“153

2、7394www.din.deDDIN EN ISO 10846-5Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties ofresilient elements Part 5: Driving point method for determination of the low-frequencytransfer stiffness of resilient supports for translatory motion(ISO 10846-5:2008)English versi

3、on of DIN EN ISO 10846-5:2009-07Akustik und Schwingungstechnik Laborverfahren zur Messung der vibro-akustischen Transfereigenschaften elastischerElemente Teil 5: Ermittlung der Transfersteifigkeit elastischer Sttzelemente aus derEingangssteifigkeit bei Anregung in translatorischer Richtung und tiefe

4、n Frequenzen(ISO 10846-5:2008)Englische Fassung DIN EN ISO 10846-5:2009-07www.beuth.deDocument comprises pages32DIN EN ISO 10846-5:2009-07 National foreword This standard has been prepared by Technical Committee ISO/TC 43 “Acoustics”, Subcommittee SC 1 “Noise”, and Technical Committee ISO/TC 108 “Me

5、chanical vibration, shock and condition monitoring” in collaboration with Technical Committee CEN/TC 211 “Acoustics” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik im DIN und VDI (Acoustics, Noi

6、se Control and Vibration Engineering Standards Committee in DIN and VDI), Technical Committee VDI/NALS C 20 Schwingungs- und Storeduzierung Verfahren und Elemente. ISO 10846 consists of the following parts, under the general title Acoustics and vibration Laboratory measurement of vibro-acoustic tran

7、sfer 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 of resilient supports for translatory motion Part

8、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 The DIN Standards corresponding to the International Standards referred to in this

9、 document are as follows: ISO 266 DIN EN ISO 266 ISO 1683 DIN EN ISO 1683 ISO 5348 DIN ISO 5348 ISO 10846 standards series DIN EN ISO 10846 standards series ISO 16063-21 DIN ISO 16063-21 ISO/IEC Guide 98-3 DIN V ENV 13005 National Annex NA (informative) Bibliography DIN V ENV 13005, Guide to the exp

10、ression of uncertainty in measurement DIN EN ISO 266, Acoustic Preferred frequencies DIN EN ISO 1683, Acoustics Preferred reference values for acoustical and vibratory levels DIN EN ISO 10846, standards series, Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of r

11、esilient elements DIN ISO 5348, Mechanical vibration and shock Mechanical mounting of accelerometers DIN ISO 16063-21, Methods for the calibration of vibration and shock transducers Part 21: Vibration calibration by comparison to a reference transducer 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE

12、NORM EN ISO 10846-5 February 2009 ICS 17.140.01; 17.160 English Version 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 translat

13、ory motion (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 10

14、846-5:2008) 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

15、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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibli

16、ographical 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

17、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, Hungary, Iceland, Irela

18、nd, 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 NORMUNG Management Centre: Avenue Marnix 17,

19、 B-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: EContents Page Foreword. 3 Introduction 4 1 Scope . 5 2 Normative references . 6 3 Terms and definitions. 7 4 Principle. 9 5 Test arrangements

20、105.1 Normal translations 105.2 Transverse translations . 115.3 Suppression of unwanted vibrations 126 Criteria for adequacy of the test arrangement. 15 6.1 General requirements. 15 6.2 Determination of upper limiting frequency 16 6.3 Force transducers. 16 6.4 Accelerometers . 16 6.5 Summation of si

21、gnals. 17 6.6 Analysers. 17 7 Test procedures 17 7.1 Selection of force measurement system and force distribution plates 17 7.2 Installation of the test element 17 7.3 Mounting and connection of accelerometers 18 7.4 Mounting and connections of the vibration exciter 18 7.5 Source signal 18 7.6 Measu

22、rements. 18 7.7 Test for linearity 19 8 Evaluation of test results . 20 8.1 Calculation of dynamic driving-point stiffness . 20 8.2 One-third-octave-band values of the frequency-averaged dynamic driving-point stiffness 21 8.3 One-third-octave-band values of the frequency-averaged transfer stiffness

23、21 8.4 Presentation of one-third-octave-band results 21 8.5 Presentation of narrow-band data 22 9 Information to be recorded 23 10 Test report . 24 Annex A (informative) Static load-deflection curve 25 Annex B (informative) Measurement uncertainty . 26 Bibliography . 30 DIN EN ISO 10846-5:2009-07 EN

24、 ISO 10846-5:2009 (E) 23 Foreword The text of ISO 10846-5:2008 has been prepared by Technical Committee ISO/TC 43 “Acoustics” 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 wh

25、ich 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 August 2009, and conflicting national standards shall be withdrawn at the latest by August 2009. Attention is drawn to the possib

26、ility 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 patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are

27、 bound to implement this European Standard: Austria, Belgium, Bulgaria, 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, Swede

28、n, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10846-5:2008 has been approved by CEN as a EN ISO 10846-5:2009 without any modification. DIN EN ISO 10846-5:2009-07 EN ISO 10846-5:2009 (E) Introduction Passive vibration isolators of various kinds are used to reduce the trans

29、mission of vibration. Examples are automobile engine mounts, resilient supports for buildings, resilient mounts and flexible shaft couplings for shipboard machinery and small isolators in household appliances. This part of ISO 10846 specifies a driving point method for measuring the low-frequency dy

30、namic transfer stiffness function of linear resilient supports. This includes resilient supports with non-linear static load-deflection characteristics provided that the elements show an approximate linearity for vibration behaviour for a given static preload. This part of ISO 10846 belongs to a ser

31、ies of International Standards on methods for the laboratory measurement of vibro-acoustic properties of resilient elements, which also includes documents on measurement principles, on a direct method and on an indirect method. ISO 10846-1 provides global guidance for the selection of the appropriat

32、e 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 this part of ISO 10846 are useful for resilient supports that are used to prevent low-frequency vibration probl

33、ems 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 attenuate low-frequency vibration or shock excursions, additional information is needed, which is not provided by this method. DI

34、N EN ISO 10846-5:2009-07 EN ISO 10846-5:2009 (E) 41 Scope This part of ISO 10846 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 f

35、orces 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 an

36、d 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 the dynamic transfer stiffness is covered. The direct method covers the determination of the low-frequency dynamic transfer stiffnes

37、s 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 international standards as well. It is considered as a valuable option for owners of (often expensive) test rigs for driving point stiffn

38、ess 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 parallel flanges (see Figure 1). Resilient elements, which are the subject of this part of ISO 10846, are those which are used to reduc

39、e 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 fluid-borne sound (airborne, waterborne or others), and b) the transmission of low-frequency vibrations (typically 1 Hz to 80 Hz) wh

40、ich 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) determines restrictions for very small and for very large resilient supports. NOTE 3 Samples of continuous supports of strips an

41、d 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 ISO 10846. Measurements for translations normal and transverse to the flanges are covered in this part of ISO 10846. The method co

42、vers 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 part of ISO 10846 can be used for the following: product information provided by manufacturers and suppliers; DIN EN ISO 10846-5:2009

43、-07 EN ISO 10846-5:2009 (E) 5 information during product development; quality control, and calculation of the transfer of vibration through isolators. 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

44、flanges. NOTE 2 Arrows indicate load direction. Figure 1 Example of resilient supports with parallel flanges 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,

45、 the latest edition of the referenced document (including any amendments) applies. ISO 266, Acoustics Preferred frequencies ISO 2041:1), Mechanical vibration, shock and condition monitoring Vocabulary ISO 5348, Mechanical vibration and shock Mechanical mounting of accelerometers ISO 7626-1, Vibratio

46、n and shock Experimental determination of mechanical mobility Part 1: Basic definitions and transducers ISO 10846-1, Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements Part 1: Principles and guidelines ISO 16063-21, Methods for the calibration

47、of vibration and shock transducers Part 21: Vibration calibration by comparison to a reference transducer ISO/IEC Guide 98-32), Uncertainty of Measurement 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 wi

48、ll be published as a re-issue of the Guide to the expression of uncertainty in measurement (GUM), 1995. DIN EN ISO 10846-5:2009-07 EN ISO 10846-5:2009 (E) 63 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2041 and the following apply. 3.1 vibration is

49、olator resilient element isolator designed to attenuate the transmission of the vibration in a certain frequency range NOTE Adapted from ISO 2041:1), 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 support undergoing testing including flanges and auxiliary fixtures, if any 3.4 blocking force Fbdynamic force on the output side of a vibration isolator, which results in a zero displaceme