Asperity Creep Under Constant Force

In Chap. 3, the creep laws for creep in asperities under constant force boundary conditions (i.e. area increase due to sink-in) are presented. These empirical laws can be used not only for analyzing friction, but are of more general value. For example, th

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Andreas Goedecke

Transient Effects in Friction Fractal Asperity Creep

Engineering Materials

For further volumes: http://www.springer.com/series/4288

Andreas Goedecke

Transient Effects in Friction Fractal Asperity Creep

123

Andreas Goedecke Siemens Corporate Technology Siemens AG Munich Germany

ISSN 1612-1317 ISSN 1868-1212 (electronic) ISBN 978-3-7091-1505-3 ISBN 978-3-7091-1506-0 (eBook) DOI 10.1007/978-3-7091-1506-0 Springer Wien Heidelberg New York Dordrecht London Library of Congress Control Number: 2013936053 c Springer-Verlag Wien 2013  This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)

Preface

This work presents a novel friction simulation toolset, the Micromechanical Asperity Creep (MIMEAC) friction simulation environment. This toolset permits the multi-scale, transient simulation of, e.g., friction-induced vibration phenomena by co-simulating the surface physics and the macroscopic system. The theory is based on two assumptions: First, rough surfaces are inherently fractal, exhibiting roughness on a wide range of scales. Second, transient friction effects are caused by creep enlargement of the real area of contact between two bodies. At the core of the theory lie extensive finite element analyses of the creep behavior of surface asperities, mode

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