Rheology, Physical and Mechanical Behavior of Materials 2 E-Book

Maurice Leroy

• Herausgeber: John Wiley & Sons
• Kategorie: Fachliteratur
• Sprache: Englisch

Veröffentlichungsjahr: 2024

Beschreibung

This book studies the flow of materials and the influence of strain rates on the relationship between imposed stresses and the dynamic deformations obtained. It provides applications for shaping, molecular molding, shrink-fit assembly and welding, including details of the various specific processes for implementation at high strain rates, illustrated by numerous industrial examples.

Rheology, Physical and Mechanical Behavior of Materials 2 presents studies on the dynamic behavior of materials when subjected to mechanical, electromagnetic and electrohydraulic actions. The topics covered include dynamic structural memory, molecular molding, shaping, assembly and welding.

It is aimed at researchers involved in the mechanics of deformable media, as well as industrial design and manufacturing departments.

Leseprobe

Series Editor

Noël Challamel

Rheology, Physical and Mechanical Behavior of Materials 2

Working at High Strain Rates, Forming, Sintering, Joining and Welding

Maurice Leroy

First published 2024 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc.

Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address:

ISTE Ltd27-37 St George’s RoadLondon SW19 4EUUKwww.iste.co.uk

John Wiley & Sons, Inc.111 River StreetHoboken, NJ 07030USAwww.wiley.com

© ISTE Ltd 2024The rights of Maurice Leroy to be identified as the author of this work have been asserted by him in accordance with the Copyright, Designs and Patents Act 1988.Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s), contributor(s) or editor(s) and do not necessarily reflect the views of ISTE Group.

Library of Congress Control Number: 2023949075

British Library Cataloguing-in-Publication DataA CIP record for this book is available from the British LibraryISBN 978-1-78630-766-8

Preface

In many circumstances, different materials are subjected to high levels of stress, which may result from the processes of forming, shock and impact problems, dynamic stresses of certain structural elements and other causes. Also, in recent years, the interest shown in plastic deformations at high speeds has developed considerably.

The researchers concentrated their efforts in laboratory studies using simple tests, within a speed range from 102 to 104 s−1 in order to fill the gap existing between the tests done on conventional hydraulic machines and those done with explosives. In addition to carrying out inexpensive tests, they were seeking to achieve easy implementation and provide as much information as possible on the behavior of the materials that were tested.

The experimental methods used for these studies vary greatly. Some of them are given in Table P.1, with the range of deformation speeds in which they are implemented.

In this book, three types of actions on materials are used (see Figure P.1): mechanical, electromagnetic and electrohydraulic stresses, .

Table P.1.Deformation speed

Type of device

Experimental difficulties

<10

−4

Creep

–

10

−4

to 1

Mechanical or hydraulic

–

1 to 10

2

Hydraulic or pneumatic

Resonance of the device

10

2

to 5.10

3

Hopkinson bar impact machines

Wave propagation, adiabatic heating

>5.10

3

Impact of projectiles

Wave propagation, high pressures heating

10

3

to 10

6

Expansion of structures caused by explosives

High pressures difficult to measure

Figure P.1.Dynamic stresses – techniques used

November 2023