BS ISO 21940-31-2013 Mechanical vibration Rotor balancing Susceptibility and sensitivity of machines to unbalance《机械振动 转子平衡 机械失衡的敏感性和灵敏度》.pdf
《BS ISO 21940-31-2013 Mechanical vibration Rotor balancing Susceptibility and sensitivity of machines to unbalance《机械振动 转子平衡 机械失衡的敏感性和灵敏度》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 21940-31-2013 Mechanical vibration Rotor balancing Susceptibility and sensitivity of machines to unbalance《机械振动 转子平衡 机械失衡的敏感性和灵敏度》.pdf(30页珍藏版)》请在麦多课文档分享上搜索。
1、BSI Standards PublicationBS ISO 21940-31:2013Mechanical vibration RotorbalancingPart 31: Susceptibility and sensitivity ofmachines to unbalanceBS ISO 21940-31:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO21940-31:2013. It supersedes BS ISO 10814:1996 whi
2、ch is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GME/21/5, Mechanical vibration, shock and conditionmonitoring - Vibration of machines.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not
3、 purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 79296 0ICS 21.120.40Compliance with a British Standard cannot confer immunity fromlegal obliga
4、tions.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2013.Amendments issued since publicationDate Text affectedBS ISO 21940-31:2013 ISO 2013Mechanical vibration Rotor balancing Part 31: Susceptibility and sensitivity of machines to
5、unbalanceVibrations mcaniques quilibrage des rotors Partie 31: Susceptibilit et sensibilit des machines aux balourdsINTERNATIONAL STANDARDISO21940-31First edition2013-08-15Reference numberISO 21940-31:2013(E)BS ISO 21940-31:2013ISO 21940-31:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED D
6、OCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission
7、can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 21940-31:2013ISO 21940-31:201
8、3(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Machine susceptibility classification 14.1 General . 14.2 Type I: Low susceptibility 24.3 Type II: Moderate susceptibility 24.4 Type III: High susceptibility .
9、24.5 Machine susceptibility correction factors . 25 Modal sensitivity 25.1 General . 25.2 Modal sensitivity ranges . 35.3 Characteristics of modal sensitivity ranges . 35.4 Values of modal sensitivity . 35.5 Operating speed . 75.6 Transient speed 96 Experimental determination of modal sensitivity ne
10、ar resonance speed under operational conditions 106.1 General 106.2 Nyquist diagram procedure 106.3 Bode diagram procedure . 107 Numerical values for the local sensitivity .118 Experimental determination of the local sensitivity .128.1 General 128.2 Procedure . 129 Damped unbalance sensitivity analy
11、sis 13Annex A (informative) Explanations of terms 14Annex B (informative) Example of polar plot diagram procedure .16Annex C (informative) Examples of classification according to modal sensitivity 17Annex D (informative) Example of mathematical model applied unbalance .18Bibliography .19BS ISO 21940
12、-31:2013ISO 21940-31:2013(E)ForewordISO (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
13、 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 the International Electrotechnical Comm
14、ission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents s
15、hould be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2, www.iso.org/directives.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 for ident
16、ifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received, www.iso.org/patents.Any trade name used in this document is information given for the convenience o
17、f users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 2, Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures.This first e
18、dition of ISO 21940-31 cancels and replaces ISO 10814:1996, of which it constitutes a technical revision. The main change is modification to the modal amplification factors to make this part of ISO 21940 more consistent with relevant parts of ISO 7919, e.g. machines predicted to operate in ISO 7919-
19、22zone A would be classified as very low (range A) and machines predicted to operate in ISO 7919-22zone B would be classified as low (range B).ISO 21940 consists of the following parts, under the general title Mechanical vibration Rotor balancing: Part 1: Introduction1) Part 2: Vocabulary2) Part 11:
20、 Procedures and tolerances for rotors with rigid behaviour3) Part 12: Procedures and tolerances for rotors with flexible behaviour4) Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors5) Part 14: Procedures for assessing balance errors6)1) Revision of ISO 19499:2007
21、, Mechanical vibration Balancing Guidance on the use and application of balancing standards2) Revision of ISO 1925:2001, Mechanical vibration Balancing Vocabulary3) Revision of ISO 1940-1:2003 + Cor.1:2005, Mechanical vibration Balance quality requirements for rotors in a constant (rigid) state Part
22、 1: Specification and verification of balance tolerances4) Revision of ISO 11342:1998 + Cor.1:2000, Mechanical vibration Methods and criteria for the mechanical balancing of flexible rotors5) Revision of ISO 20806:2009, Mechanical vibration Criteria and safeguards for the in-situ balancing of medium
23、 and large rotors6) Revision of ISO 1940-2:1997, Mechanical vibration Balance quality requirements of rigid rotors Part 2: Balance errorsiv ISO 2013 All rights reservedBS ISO 21940-31:2013ISO 21940-31:2013(E) Part 21: Description and evaluation of balancing machines7) Part 23: Enclosures and other p
24、rotective measures for the measuring station of balancing machines8) Part 31: Susceptibility and sensitivity of machines to unbalance9) Part 32: Shaft and fitment key convention10)7) Revision of ISO 2953:1999, Mechanical vibration Balancing machines Description and evaluation8) Revision of ISO 7475:
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