Abstract
This paper considers the collapse behaviour of polymeric liners confined within rigid steel pipes. Following a brief survey of two-dimensional models for collapse behaviour, some three-dimensional aspects of the problem are examined. Two particular phenomena are considered: the axial stability of collapse under different loading conditions and the effect of restraint at the liner ends. It is confirmed that the point of onset of unstable collapse is generally well-modelled by the critical pressure predicted from two-dimensional models. The effect of end restraint can generally be neglected, except in the case of short liners, where buckling collapse can be inhibited.
Subject
Stability,
Materials,
Piping,
Deformation,
Annulus,
Moduli,
Walls,
Buckling,
Constants,
Steel pipes,
Fluids,
Pressure,
Polyethylene
© 2000 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2000
Association for Materials Protection and Performance (AMPP)
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