Introduction to Optimum Design Introduction to Optimum Design Second Edition Jasbir S. Arora The University of Iowa Amsterdam Boston Heidelberg London New York Oxford Paris San Diego San Francisco Singapore Sydney Tokyo Elsevier Academic Press 525 B Street, Suite 1900, San Diego, California 92101-4495, USA 84 Theobald’s Road, London WC1X 8RR, UK This book is printed on acid-free paper. Copyright ©2004, Elsevier Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permissions may be sought directly from Elsevier’s Science & Technology Rights Department in Oxford, UK: phone: (+44) 1865 843830, fax: (+44) 1865 853333, e-mail: [email protected]. You may also complete your request on-line via the Elsevier homepage (http://elsevier.com), by selecting “Customer Support” and them “Obtaining Permissions.” Library of Congress Cataloging-in-Publication Data Arora, Jasbir S. Introduction to optimum design / Jasbir S. Arora.—2nd ed. p. cm. Includes bibliographical references and index. ISBN0-12-064155-0 (acid-free paper) 1. Engineering design—Mathematical models. I. Title. TA174.A76 2004 620¢.0042¢015118—dc22 2004046995 British Library Cataloguing in Publication Data Acatalogue record for this book is available from the British Library ISBN: 0-12-064155-0 For all information on all Academic Press publications visit our Web site at books.elsevier.com Printed in the United States of America 04 05 06 07 08 09 9 8 7 6 5 4 3 2 1 Jasbir S. Arora F. Wendell Miller Distinguished Professor of Engineering Department of Civil and Environmental Engineering Department of Mechanical and Industrial Engineering Center for Computer Aided Design College of Engineering The University of Iowa Iowa City, Iowa 52242-1527 To Ruhee Rita Balwant Kaur Wazir Singh Preface I have based the material of the Second Edition on the comments that I had received from the students over the years and on input from colleagues around the world. The text has been rewritten, reorganized, and expanded for the second edition. Particular attention has been paid to the pedagogical aspect of the material. Each chapter starts with a list of learning objectives that the students can keep in mind while studying the material of the chapter. The basic philosophy of the text remains the same as before: to describe an organized approach to engineering design optimization in a rigorous and yet simplified manner, illustrate various concepts and procedures with simple examples, and demonstrate their applicability to engi- neering design problems. Formulation of a design problem as an optimization problem is emphasized and illustrated throughout the text. Some computational algorithms are presented in a step-by-step format to give the students a flavor of the calculations needed for solving optimum design problems. The new material covered in the second edition includes: use of Excel and MATLAB as learning and teaching aids, discrete variable optimization, genetic algorithms, multiobjective optimization, and global optimization. The text can be used in several ways to design different types of courses for undergradu- ate and graduate studies. For undergraduate students, the key question is, “What should be taught on the subject of optimization?” I feel that the material thoroughly covered should be: optimum design problem formulation, basic concepts that characterize an optimum design, basic concepts of numerical methods for optimization, and simple but illustrative examples of optimum design. In addition, some exposure to the use of optimization software would be quite beneficial. With this background, the students would be able to formulate and use soft- ware properly to optimize problems once they go into industry. The basic knowledge gained with this material can serve as a life-long learning tool on the subject of optimum design. Such a course for junior and senior studentsin most branches of engineering can include the following material, augmented with 2- to 3-week-long team projects (project type exercises and sections with advanced material are marked with an “*” in the text): Appendix A. Economic Analysis Chapter 1. Introduction to Design Chapter 2. Optimum Design Problem Formulation Chapter 3. Graphical Optimization Method Chapter 4. Optimum Design Concepts Chapter 6. Linear Programming Methods for Optimum Design Chapter 8. Numerical Methods for Unconstrained Optimum Design Chapter 10. Numerical Methods for Constrained Optimum Design ix
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