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1、BS EN ISO 10846-2:2008 ICS 17.140.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Acoustics and vibration Laboratory measurement of vibro- acoustic transfer properties of resilient elements Part 2: Direct method for determination of the dynamic stiffness of
2、 resilient supports for translatory motion (ISO 10846-2:2008) Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008 ISBN 978 0 580
3、 54120 9 Amendments/corrigenda issued since publication DateComments BS EN ISO 10846-2:2008 National foreword This British Standard is the UK implementation of EN ISO 10846-2:2008. It supersedes BS EN ISO 10846-2:1999 which is withdrawn. The UK participation in its preparation was entrusted to Techn
4、ical Committee EH/1/4, Machinery noise. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Bri
5、tish Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10846-2 August 2008 ICS 17.140.01Supersedes EN ISO 10846-2:1998 English Version Acoustics a
6、nd vibration - Laboratory measurement of vibro- acoustic transfer properties of resilient elements - Part 2: Direct method for determination of the dynamic stiffness of resilient supports for translatory motion (ISO 10846-2:2008) Acoustique et vibrations - Mesurage en laboratoire des proprits de tra
7、nsfert vibro-acoustique des lments lastiques - Partie 2: Mthode directe pour la dtermination de la raideur dynamique en translation des supports lastiques (ISO 10846-2:2008) Akustik und Schwingungstechnik - Laborverfahren zur Messung der vibro-akustischen Transfereigenschaften elastischer Elemente -
8、 Teil 2: Direktes Verfahren zur Ermittlung der dynamischen Steifigkeit elastischer Sttzelemente bei Anregung in translatorischer Richtung (ISO 10846-2:2008) This European Standard was approved by CEN on 12 April 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
9、ipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standa
10、rd exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of 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 stan
11、dards bodies of 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, Sweden, Switzerland and United Ki
12、ngdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10846-2:2008
13、: E Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 EN ISO 10846-2:2008 (E) 3 Foreword This document (EN ISO 10846-2:2008) has been prepared by Technical Committee ISO/TC 43 “Acoustics“ in collaboration with Technical Committee CEN/TC
14、 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 February 2009, and conflicting national standards shall be withdrawn at the latest by Febru
15、ary 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 patent rights. This document supersedes EN ISO 10846-2:1998. According to the CEN/CENELEC I
16、nternal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
17、 Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10846-2:2008 has been approved by CEN as a EN ISO 10846-2:2008 without any modification. Licensed CopyChinese University of Hong Kong, 21/
18、10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 ISO 10846-2:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 2 3 Terms and definitions. 3 4 Principle. 6 5 Requirements for apparatus 6 5.1 Normal translations 6 5.2
19、Transverse translations . 8 5.3 Suppression of unwanted vibrations 11 6 Criteria for adequacy of the test arrangement. 12 6.1 Frequency range. 12 6.2 Measurement of blocking force. 12 6.3 Flanking transmission 13 6.4 Unwanted input vibrations. 13 6.5 Accelerometers. 14 6.6 Force transducers. 14 6.7
20、Summation of signals. 14 6.8 Analysers. 15 7 Test procedures 15 7.1 Installation of the test elements 15 7.2 Selection of force measurement system and output-force distribution plates 15 7.3 Mounting and connection of accelerometers 15 7.4 Mounting and connections of the vibration exciter 16 7.5 Sou
21、rce signal 16 7.6 Measurements. 16 7.7 Test for linearity 17 8 Evaluation of test results. 18 8.1 Calculation of dynamic transfer stiffness 18 8.2 One-third-octave-band values of the frequency-averaged dynamic transfer stiffness. 18 8.3 Presentation of one-third-octave-band results 19 8.4 Presentati
22、on of narrow-band data 20 9 Information to be recorded 21 10 Test report . 22 Annex A (informative) Static load-deflection curve 23 Annex B (informative) Measurement uncertainty . 24 Bibliography. 28 Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO
23、 10846-2:2008 ISO 10846-2:2008(E) iv ISO 2008 All rights reserved Foreword 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
24、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 part in the work. ISO collaborates closely with
25、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 prepare International Standards. Draft Interna
26、tional 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 that some of the elements of this document may b
27、e the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10846-2 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise, and ISO/TC 108, Mechanical vibration, shock and condition monitoring. This second edition c
28、ancels and replaces the first edition (ISO 10846-2:1997), which has been technically revised. 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 guidelin
29、es 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 4: Dynamic stiffness of elements other than resilient supports for tra
30、nslatory motion Part 5: Driving point method for determination of the low-frequency transfer stiffness of resilient supports for translatory motion Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 ISO 10846-2:2008(E) ISO 2008 All right
31、s reserved v Introduction Passive resilient elements 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 shipboard machinery and small isolators in household app
32、liances. This part of ISO 10846 specifies a direct method for measuring the dynamic transfer stiffness function of linear resilient supports. This includes resilient supports with non-linear static load-deflection characteristics, as long as the elements show an approximate linearity for vibration b
33、ehaviour 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 principles, on an indirect method and on a driving poi
34、nt method. ISO 10846-1 provides 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. The results of the method described in this part of ISO 10846 are useful for resilient suppor
35、ts 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 attenuate low- frequency vibration or shock excursions, additional infor
36、mation is needed, which is not provided by this method. Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 INTERNATIONAL ST
37、ANDARD ISO 10846-2:2008(E) ISO 2008 All rights reserved 1 Acoustics and vibration Laboratory measurement of vibro- acoustic transfer properties of resilient elements Part 2: Direct method for determination of the dynamic stiffness of resilient supports for translatory motion 1 Scope This part of ISO
38、 10846 specifies a method for determining the dynamic transfer stiffness for translations of resilient supports, under specified preload. The method concerns the laboratory measurement of vibrations on the input side and blocking output forces and is called “the direct method”. The method is applica
39、ble 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 reduce the transmission of vibration in the lower part of the audible frequency range (typically 20 Hz to 500 Hz) to a structure which may, for
40、example, radiate unwanted fluid-borne sound (airborne, waterborne or others), and 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 1 In practice, the si
41、ze of the available test rig(s) can restrict the use of very small or very large resilient supports. NOTE 2 Samples of continuous supports of strips and mats are included in this method. Whether or not the sample describes the behaviour of the complex system sufficiently is the responsibility of the
42、 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 direct method covers the frequency range from 1 Hz up to a frequency fUL, which is usually determined by the test rig. NOTE 3 Because of the large variety of
43、 test rigs and test elements, fUL is variable. In this part of ISO 10846, the adequacy of the test rig is not defined for a fixed frequency range, but on the basis of measured data, as described in 6.1 to 6.4. Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI
44、 BS EN ISO 10846-2:2008 ISO 10846-2:2008(E) 2 ISO 2008 All rights reserved NOTE 1 When a resilient support has no parallel flanges, an auxiliary fixture is included as part of the test element to arrange for parallel flanges. NOTE 2 The arrows indicate the load direction. Figure 1 Example of resilie
45、nt supports with parallel flanges 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; information during product development; quality control; calculation of the transfer of vibratio
46、n energy through isolators. 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) applies
47、. 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, Vibration and shock Experimental determination of mechanical mobility Part 1: Basic defin
48、itions 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 of vibration and shock transducers Part 21: Vibration calibration by comparison t
49、o 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 will be published as a re-issue of the Guide to expression of uncertainty in measurement (GUM), 1995. Licensed CopyChinese University of Hong Kong, 21/10/2008 02:51, Uncontrolled Copy, (c) BSI BS EN ISO 10846-2:2008 ISO 10846-2:2008(E) ISO 2008 All rights reserved 3 3 Terms and defi
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