To generate noise from gears the primary cause must be a force variation which generates a vibration (in the components), which is then transmitted to the surrounding structure. It is only when the vibration excites external panels that airborne noise is produced. Inside a normal sealed gearbox there are high noise levels but this does not usually matter since the air pressure fluctuations are not powerful enough to excite the gearcase significantly. | Gear Noise and Vibration Second Edition Revised and Expanded J. Derek Smith Gear Noise and Vibration Second Edition Revised and Expanded J. Derek Smith Cambridge University Cambridge England MARCEL Marcel Dekker Inc. DEKKER New York Basel Library of Congress Cataloging-in-Publication Data A catalog record for this book is available from the Library of Congress. ISBN 0-8247-4129-3 This book is printed on acid-free paper. Headquarters Marcel Dekker Inc. 270 Madison Avenue New York NY 10016 tel 212-696-9000 fax 212-685-4540 Eastern Hemisphere Distribution Marcel Dekker AG Hutgasse4 Postfach 812 CH-4001 Basel Switzerland tel 41-61-260-6300 fax 41-61-260-6333 World Wide Web http The publisher offers discounts on this book when ordered in bulk quantities. For more information write to Special Sales Professional Marketing at the headquarters address above. Copyright 2003 by Marcel Dekker Inc. All Rights Reserved. Neither this book nor any part may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying microfilming and recording or by any information storage and retrieval system without permission in writing from the publisher. Current printing last digit 10 987654321 PRINTED IN THE UNITED STATES OF .
