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IUTAM Symposium on Non-linear Singularities in Deformation and Flow: Proceedings of the IUTAM Symposium held in Haifa, Israel, 17–21 March 1997 PDF

365 Pages·1999·16.36 MB·English
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IUTAM SYMPOSIUM ON NON-LINEAR SINGULARITIES IN DEFORMATION AND FLOW IUTAM Symposium on Non-linear Singularities Deformation and Flow Proceedings of the IUTAM Symposium held in Haifa, Israel, 17-21 March 1997 Edited by D. DURBAN Faculty of Aerospace Engineering, Israel Institute of Technology, Technion, Haifa, Israel and J.R.A. PEARSON Fluid Mechanics Department, Schlumberger Cambridge Research, Cambridge, U.K. SPRINGER SCIENCE+BUSINESS MEDIA, B.V. Library of Congress Cataloging-in-Publication Data ISBN 978-94-010-5991-6 ISBN 978-94-011-4736-1 (eBook) DOI 10.1007/978-94-011-4736-1 Printed on acid-free paper All Rights Reserved © 1999 Springer Science+Business Media Dordrecht Originally published by Kluwer Academic Publishers in 1999 Softcover reprint of the hardcover 1st edition 1999 No part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without written permission from the copyright owner. CONTENTS Preface ix Committees and Sponsors xi Introduction Length Scales, Asymptotics and Non-Linear Singularities 1 A. Pearson Corner Flows High Weissenberg Number Asymptotics and Corner Singularities in Viscoelastic Flows 13 M. Renardy Comer Singularities in Three-Dimensional Stokes Flow 21 H.K. Moffatt and V. Mak Hydraulic Fracturing Fluid and Solid Singularities at the Tip of a Fluid-Driven Fracture 27 E. Detoumay Inverse Problems in Hydraulic Fracturing 43 D.P. Alekseenko, A.M. Vaisman and A.F. Zazovsky Fracture Mechanics I The Bimaterial Notch Problem 55 L. Banks-Sills VI Crack Development in Spatially Random Stress Fields Generated by Point Defects. Fracture in Compression 63 A.V. Dyskin Elastic Interaction of Edge Dislocations with a Crack in a Disk 75 S. Vigdergauz The Asymptotic Solution of Anisotropic Gradient Elasticity with Surface Energy for a Mode II Crack 87 1. Vardoulakis and G. Exadaktylos Interfacial Effects in Fluids The Unsteady Motion of Three Phase Contact Lines 99 J. Billingham Singularities on Viscous Interfaces 111 S.H. Davis Spirals, Jets and Pinches 119 M.J. Shelley Penetration Phenomena Localization of Strain and the Melting Wave in High-Speed Penetration 129 M. V. Ayzenberg and L.1. Slepyan Friction and Singularities in Steady Penetration 141 D. Durban Fracture Mechanics II Creep Induced Cohesive Crack Propagation in Mixed Mode 155 F. Barpi, S. Valente, F. Chilli and L. Imperato \"11 Asymptotic Analysis of a Spontaneous Crack Growth. Application to a Blunt Crack 169 D. Leguillon Experimental Investigation of Dynamic Failure Mode Transitions 181 D. Rittel Energy Release in Fracture of Rate-Dependent Materials 193 L.l. Slepyan Numerical Methods A Combined Element-Free Galerkin Method/Arbitrary Lagrangian-Eulerian Formulation for Dynamic Crack Propagation 205 l.-P. Ponthot and T. Belytschko Boundary Element and Discrete Vortices Method for Ideal Fluid Flow Calculations 217 D. V. Yevdokymov Method of Numerical Analysis of Stress Singularity at Singular Points in Two- and Three-Dimensional Bodies 231 V.P. Matveyenko, S.M. Borzenkov and S.G. Minakova Capillary Breakup and Instabilities Capillary-Elastic Instabilities with an Oscillatory Forcing Function 243 D. Halpern, 1.A. Moriarty and I. Grotberg Singularities and Similarity Solutions in Capillary Breakup 257 I.R. Lister, M.P. Brenner, R.F. Day, E.J. Hinch and H.A. Stone The Linear Stability of a Two-Phase Compound Jet 271 A. Chauhan, C. Maldarelli, D. Papageorgiou and D. Rumschitzki VlIl Cusps and Contact Lines Free-Surface Deformation and Formation of Cusps at Low Reynolds Number Flow 283 J.-T. Jeong Free-Surface Cusps and Moving Contact Lines. A Common Approach to the Problems 297 Y.D. Shikhmurzaev Applications Effects of Time-Periodic Fields on the Rheology of Suspensions of Brownian Dipolar Spheres 309 I. Puyesky and I. Frankel A Molecular Theory for Dynamic Contact Angles 321 A. Indeikina and H.-c. Chang Regularization of Singularities in the Theory of Thin Liquid Films 339 A. Oron and S.G. Bankoff Bounds on the Endurance Limit in Fatigue of Dilute Fibrous Composites by the Shakedown Theorems 349 J. Tirosh Preface The IUTAM Symposium on "Non-Linear Singularities in Defonnation and Flow" took place from March 17 to 21, 1997, at the Technion in Haifa, Israel, with 70 participants from 12 countries. The leitmotif of this Symposium brought together scientists working on singularity-dominated local fields in various branches of continuum mechanics, covering traditional solid and liquid behaviour as well as that of more complex non-linear materials; non-linearities arise either from the constitutive equations for the material or from the presence of interfaces or both. The scientific committee invited speakers who presented 34 papers in 12 sessions. Topics covered in the lectures included near tip fields of cracks, notches and wedges; flow around comers, wedges and cones; interfacial phenomena; moving contact lines in multiphase systems; cusps in fluid interfaces and shocks and localization. There was a general consensus among the participants that singularities induced by non-linearities provide a challenging and currently important area of research in mechanics, engineering and applied mathematics. Presentation and discussions during the symposium initiated further studies of problems in these interesting areas. This volume contains 30 full length papers, submitted by the lecturers after the symposium and reviewed to the standards of international scientific periodicals. It is our pleasure to acknowledge the efficient and tireless help of Mrs. Alice Goodman and Mr. Gideon Wachsman of the Faculty of Aerospace Engineering at the Technion. David Durban Anthony Pearson Haifa Cambridge April 1998 IX International Scientific Committee C. Atkinson (UK) G.I. Barenblatt (USA) H.-c. Chang (USA) D. Durban (Israel, Chairman) E.J. Hinch (UK) J.-T. Jeong (Korea) D.D. Joseph (USA) H.K. Moffatt (UK) J.R.A. Pearson (UK, Chairman) E. Sanchez-Palencia (France) I. V ardoulakis (Greece) Local Organizing Committee D. Durban (Chairman) I. Frankel D. Givoli B. Greenberg Y. Tirosh A. Goodman (Secretary) Sponsors of the IUTAM Symposium on Non-Linear Singularities in Deformation and Flow International Union of Theoretical and Applied Mechanics (JUT AM) The Institute of Advanced Studies in Mathematics at the Technion Technion-Israel Institute of Technology The S. Neaman Institute for Advanced Studies in Science and Technology Faculty of Aerospace Engineering, Technion International Association for Computational Mechanics (JACM) Kluwer Academic Publishers xi LENGTH SCALES, ASYMPTOTICS AND NON-LINEAR SINGULARITIES J.R.A. PEARSON 23 Chaucer Road, Cambridge CB2 2EB, England 1. Introduction This short introductory paper will try to give a common perspective to many of the problems and techniques covered in later papers. We shall draw attention to those common features that lead to singularities, and to any similarities in the techniques used to deal with them. Continuum mechanical theories for elasto-plastic solids, for materials with memory and for purely viscous or ideal fluids have tended to be treated separately lead ing to unnecessary and unhelpful specialisation. The mechanics of porous or fractured media have developed as almost independent subjects, while wave propagation is often studied in isolation. It is hoped that this symposium will help to restore the universality inherent in continuum mechanics. It is well known that singular solutions exist for many of the sets of equa tions (mathematical models) describing the bulk continuum mechanics of deformable and fluid materials. In the case of linear models, these sim ple singular solutions have fundamental mathematical (rather than phys ical) significance and can be used in a formal fashion to provide gen eral solutions to geometrically-complex boundary-value problems. In cases with smooth boundaries, superposition of these isolated singular solutions can lead to physically acceptable (everywhere) smooth solutions. However, when boundaries have corners or include finite cracks, these singularities (specifically in the stress tensor) remain as localised features ofthe full solu tion. Examples are provided later in this volume (Banks-Sills, Matveyenko et al., Leguillon). The question then arises as to how these physically unacceptable sin gularities can best be removed (regularised) so as to make the solutions correspond to physical reality. There are several ways in which this can be done. D. Durban and J.R.A. Pearson (eds.), IUTAM Symposium on Non-Linear Singularities in Deformation and Flow, 1-20. © 1999 Kluwer Academic Publishers.

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