ISO INTERNATIONAL STANDARD 10846-1 Second edition 2008-08-15 Acoustics and vibration Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 1: Principles and guidelines Acoustique et vibrations - Mesurage en laboratoire des propriétés de transfert vibro-acoustique des élements élastiques - Partie 1: Principes et lignes directrices Reference number ISO 10846-1:2008(E) @ ISO 2008 THS unde Not for Resale ISO 10846-1:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTED DOCUMENT @ ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or IsO's memberbody in the country of the requester. ISO copyright office Case postale 56. CH-1211Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2008 - All rights reserved I without license from IHS Not for Resale ISO 10846-1:2008(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Selection of appropriate International Standard . 5 Theoretical background.. 5.1 Dynamic transfer stiffness. 5.2 Dynamic stiffness matrix of resilient elements 5.3 Number of relevant blocked transfer stiffnesses 5.4 Flankingtransmission. 5.5 Loss factor.. 6 Measurementprinciples. 6.1 Dynamic transfer stiffness 6.2 Direct method, 9 6.3 Indirect method. 6.4 Driving point method... 4 Annex A (informative) Functions related to dynamic stiffness .... 16 Annex B (informative) Effect of symmetry on the transfer stiffness matrix.. Annex C (informative) Simplified transfer stiffness matrices... 20 Annex D (informative) Linearity of resilient elements .. 22 Bibliography 23 ii from IHS Not for Resi