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IUTAM Symposium on Recent Developments in Non-linear Oscillations of Mechanical Systems: Proceedings of the IUTAM Symposium held in Hanoi, Vietnam, March 2–5, 1999 PDF

338 Pages·2000·15.582 MB·English
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IUTAM SYMPOSIUM ON RECENT DEVELOPMENTS IN NON-LINEAR OSCILLATIONS OF MECHANICAL SYSTEMS SOLID MECHANICS AND ITS APPLICATIONS Volume 77 Series Editor: G.M.L. GLADWELL Department of Civil Engineering University of Waterloo Waterloo, Ontario, Canada N2L 3GI Aims and Scope of the Series The fundamental questions arising in mechanics are: Why?, How?, and How much? The aim of this series is to provide lucid accounts written bij authoritative researchers giving vision and insight in answering these questions on the subject of mechanics as it relates to solids. The scope of the series covers the entire spectrum of solid mechanics. Thus it includes the foundation of mechanics; variational formulations; computational mechanics; statics, kinematics and dynamics of rigid and elastic bodies: vibrations of solids and structures; dynamical systems and chaos; the theories of elasticity, plasticity and viscoelasticity; composite materials; rods, beams, shells and membranes; structural control and stability; soils, rocks and geomechanics; fracture; tribology; experimental mechanics; biomechanics and machine design. The median level of presentation is the first year graduate student. Some texts are mono graphs defining the current state of the field; others are accessible to final year under graduates; but essentially the emphasis is on readability and clarity. For a list of related mechanics titles, see final pages. IUTAM Symposium on Recent Developments in Non-linear Oscillations of Mechanical Systems Proceedings of the lUTA M Symposium held in Hanoi, Vietnam, March 2-5, 1999 Edited by Nguyen Van Dao Vietnam National University, Hanoi and E.J. Kreuzer Technical University, Hamburg-Harburg, Germany .... " SPRINGER SCIENCE+BUSINESS MEDIA, B.V. A C.I.P. Catalogue record for this book is available from the Library of Congress. ISBN 978-94-010-5809-4 ISBN 978-94-011-4150-5 (eBook) DOI 10.1007/978-94-011-4150-5 Printed on acid-free paper AII Rights Reserved © 2000 Springer Science+Business Media Dordrecht Origina1ly published by Kluwer Academic Publishers in 2000 Softcover reprint ofthe hardcover lst edition 2000 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 Awrejcewicz J. and Tomczak K. Stability Improvement of the Impact Dynamical Systems-Analytical and Numerical Methods. Benedettini F. Theoretical and Experimental Evidence of Symmetric Response Instability in the Finite, Planar Dynamics of a Circular Arch. 11 Bevilacqua L., Battista R.B. and Ebecken N.F.F. Dynamical Analysis of an Offshore Platform with Vibration Absorbers. 23 Bishop S.R. Complex Dynamics of a "Simple" Mechanical System: The Parametrically Excited Pendulum. 35 Chernousko F. L. Control of Oscillations in Systems with Many Degrees of Freedom. 45 Czolczynski K., Kapitaniak T. and Brindley J. Elimination of Instabilities in Rotors Supported in Gas Bearings. 55 Maisser P., Freudenberg H. and Pham Anh Tuan Integrated Electromechanical Multi-Coordinate Drive with an Elastic Deformable Slide. 65 Grebogi C., Baptista M.S., Hunt B.R., Ott E. and Yorke J.A. Control of Shipboard Cranes. 75 Guo-Kang Er and Vai Pan Iu A Consistent and Effective Method for Nonlinear Random Oscillations of MDOF Systems. 85 Hu H.Y. and WU Z.Q. Stability and Hopf Bifurcation of a Four-wheel-steering Vehicle Involving Driver's Delay. 95 Kreuzer E. and Ellermann K. Moored Crane Vessels in Regular Waves. 105 LeLuongTai On the Stability of Systems of Differential Equations Unsolved for Derivatives. 115 Maisser P. and Jungnickel U. Stability of Controlled Motion of a Gymnast in High-speed Mid Air Maneuvers. 121 v vi Mitropolsky Y. A. Asymptotic Methods for investigating Non-linear Wave Processes. 131 Nguyen Van Dao Some Problems on Non-linear Oscillations. 141 Nguyen Van Dinh and Tran Kim Chi Stationary and Transient Processes in Oscillating Systems with Two Degrees of Freedom Subjected to Parametric and Forced Excitations. 153 Nguyen Hai and Ostiguy G. L. On the Application of Two Perturbation Methods to Non-linear Systems. 165 Nguyen Xuan Hung and Nguyen Xuan Hoang New Method of Calculating the Vibration of Offshore Structure Subjected to Wave Action. 175 Nguyen Van Khang, Hoang Ha, Vu Van Khiem and Do Xuan Tho On the Transverse Vibrations of Beam-Bridges Under the Action of Some Moving Bodies. 187 Nguyen Tien Khiem, Dao Nhu Mai, Nguyen Viet Khoa and Le Van Anh Pile Soil System Identification by a Modal Testing Approach. 197 Nguyen Nhat Le, Dinh Van Phong and Do Sanh On Numerical Methods for Constrained Mechanical Systems. 207 Nguyen DongAnh and Ninh Quang Hai A Technique for Solving Nonlinear Systems Subject to Random Excitation. 217 Popp K. and Bruns J. U. On the Identification of Nonlinear Systems. 227 Rega G., Lacarbonara W. and Nayfeh A.H. Reduction Methods for Non-linear Vibrations of Spatially Continuous Systems with Initial Curvature. 235 Samoilenko A.M. Asymptotic Method for Investigation of m-frequency Oscillation Systems. 247 Schiehlen W. and Fritz A. Nonlinear Oscillations of Vehicles in Convoy. 257 SchulzM. Instability Phenomena of Foldable Structures with Unilateral Contact. 269 Spyrou K.J. Similarities in the Yaw and Roll Dynamics of Ships in Extreme Astern Seas. 279 VII Albrecht B., Steindl A., and Troger H. Non-linear three-dimensional Oscillations of Fluid Conveying Viscoelastic Tubes with an Additional Mass. 291 van de Vrande B. L. and van Campen D. H. Nonlinear Dynamics of a Rigid Rotor on Compliant Journal Bearings. 30 I Vestroni F. and Bernardini D. Nonlinear Dynamic Behaviour of Shape Memory Alloy Oscillators. 311 WauerJ. Nonlinear Waves in a Fluid-Filled Planar Duct with a flexible Wall. 321 Addresses of participants 333 List of Sponsors 341 PREFACE This volume contains selected papers presented at the Symposium on "Recent Developments in Non-linear Oscillations of Mechanical Systems", held in Hanoi, Vietnam, from 2 -5 March 1999. This Symposium was initiated and sponsored by the International Union of Theoretical and Applied Mechanics (lUIA M) and organised in conjunction with Vietnam National University, Hanoi. Ihe purpose of the Symposium was to bring together scientists active in different fields of oscillations with the aim to review the recent progress in theory of oscillations and engineering applications and to outline the prospects in its further achievements to then co-ordinate and direct research in this field to further co-operation between scientists and various scientific institutions. An International Scientific Committee was appointed by the Bureau of IUIA M with the following members: Nguyen Van Dao (Vietnam, Co-Chairman) E.J. Kreuzer (Germany, Co-Chairman) D.H. van Campen (The Netherlands) F.L. Chernousko (Russia) A.H. Nayfeh (U.S.A) Nguyen Xuan Hung (Vietnam) W.O. Schiehlen (Germany) J.M.T. Thompson (U.K) Y. Veda (Japan). This Committee selected the participants to be invited and the papers to be presented at the Symposium. As a result of this procedure, 52 active scientists from 16 countries responded to the invitation, and 42 papers were presented in lecture and poster discussion sessions. The scientific presentations were devoted to the following topics: 1. Non-linear Oscillations of beams, plates, vehicles and other dynamic systems; 2. Analysis and Control of Non-linear Systems; 3. Non-linear waves; 4. Dynamics of Offshore structures; 5. System Identification; 6. Mathematical and Numerical methods for investigating non-linear systems. The papers of this volume are arranged in alphabetical order with respect to the family name of the first author. The presentations and discussions, including the round table discussion, during the Symposium will certainly stimulate further theoretical and applied investigations in non-linear oscillations. The publication of the proceedings will promote this development. The success of the Symposium would not have been possible without the excellent work of the Local Organising Committee. Members of that Committee were Do Sanh ix x (Chairman), Phan Nguyen Di, Nguyen Van Khang, Tran Quang Khoi, Nguyen Gao Menh, Dinh Van Phong, Nguyen Thi Trung and Vu Ngoc Tu. The secretarial work for both the Conference and this volume has been admirably undertaken by Mrs. Nguyen Thi Hong Hanh. We are sincerely grateful to Prof. Werner Schiehlen, President of IUTAM for his encouragement to the success of this IUTAM Symposium and to Vietnam National University, Hanoi, the host of this significant scientific event. The editors wish to thank the participants of this IUT AM Symposium, especially the authors of the papers, and all organisers for their enthusiastic and valuable contributions to the Symposium. Sincere thanks are also due to Prof. Graham Gladwell, and Kluwer Academic Publishers for their help and co-operation. We gratefully acknowledge financial support from IUTAM and the Vietnam Council for Natural Science. Nguyen Van Dao E.J. Kreuzer STABILITY IMPROVEMENT OF THE IMPACT DYNAMICAL SYSTEMS -ANALYTICAL AND NUMERICAL METHODS 1. AW REJCEWICZ and K. TOMCZAK Division of Automatics and Biomechanics Technical University ofL6dz 1/15 Stefanowskiego St., 90-924 L6dz, POLAND 1. Introduction Vibro-impact vibration problems with one-degree-of-freedom systems have a long history in mechanics. The problems like stationary subharmonic motions and their stability, the influence of damping and friction on vibro-impact dynamics, elastic and plastic type impacts, time histories and phase portraits of the vibro-impact systems have been considered [1-7]. In this work we propose an analytical approach to determine suitable delay loop coefficients to realise the required vibro-impact periodic dynamics for a non-resonance case. The obtained analytical formulas allow for a proper choice of the delay loop coefficients in order to achieve the required vibro-impact periodic motion quicker then in the case without a loop. When the vibro-impact periodic motion is achieved the delay loop is automatically switched off 2. The analysed system A feedback control with the delay loop is used in order to improve a stability of a vibro-impact periodic motion. It possesses the following properties: simple construction (a feedback loop with delay elements); N. Dao et al. (eds.), IUTAM Symposium on Recent Developments in Non-linear Oscillations of Mechanical Systems © Springer Science+Business Media Dordrecht 2000

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