Butterworth-Heinemann Linacre House,Jordan Hill,Oxford OX2 8DP 225 Wildwood Avenue,Woburn,MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd & A member of the Reed Elsevier plc group OXFORD AUCKLAND BOSTON MELBOURNE NEW DELHI First published 1977 Reprinted with corrections 1980,1981,1982 Second edition 1985 Reprinted with corrections 1989 Reprinted1992,1995,1996 Third edition 1997 Reprinted 1999 @E.J.Heam1977.1985.1997 All rights reserved.No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication)without the written permission of the copyright holder except in accordance with the provisions of the Copyright,Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd,90 Tottenham Court Road,London,England WIP 9HE. Applications for the copyright holder's written permission to reproduce any part of this publication should be addressed to the publishers British Library Cataloguing in Publication Data Heam,E.J.(Edwin John) Mechanics of materials.-3rd ed. 1.An introduction to the mechanics of elastic and plastic deformation of solids and structural materials 1.Strength of materials 2.Strains and stress 3.Deformations(Mechanics)4.Elasticity I.Title 620.1'12 ISBN0750632666 Library of Congress Cataloguing in Publication Data Hearn,E.J.(Edwin John) Mechanics of materials l:an introduction to the mechanics of elastic and plastic deformation of solids and structural materials/E.J.Hearn.-3rd ed. p. cm. Includes bibliographical references and index. ISBN0750632666 1.Strength of materials. I.Title TA405.H3 620.1'123-dc21 96-49967 CIP Typeset by Laser Words,Madras,India Printed and bound in Great BritainButterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 225 Wildwood Avenue, Woburn, MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd -& A member of the Reed Elsevier plc group OXFORD AUCKLAND BOSTON MELBOURNE NEW DELHI First published 1977 Reprinted with corrections 1980, 1981, 1982 Second edition 1985 Reprinted with corrections 1989 Reprinted 1992, 1995, 1996 Third edition 1997 Reprinted 1 ?99 0 E.J. Hem 1977, 1985, 1997 All rights reserved. No part of this publication may be reproduced in any materiai form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England WlP 9HE. Applications for the copyright holder’s written permission to reproduce any part of this publication should be addressed to the publishers British Library Cataloguing in Publication Data Hem, E. J. (Edwin John) Mechanics of materials. - 3rd ed. 1. materials 1. Strength of materials 2. Strains and stress 3. Deformations (Mechanics) 4. Elasticity I. Title 620.1 12 An introduction to the mechanics of elastic and plastic deformation of solids and structural ISBN 0 7506 3266 6 Library of Congress Cataloguing in Publication Data Heam, E. J. (Edwin John) Mechanics of materials 1: an introduction to the mechanics of elastic and plastic deformation of solids and structural materialsE. J. Heam. - 3rd ed. p. cm. Includes bibliographical references and index. ISBN 0 7506 3266 6 1. Strength of materials. I. Title TA405.H3 620.1’123-dc21 96-49967 CIP Typeset by Laser Words, Madras, lndia Rinted and bound in Great Britain