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Abstract

Simplified inelastic analyses are desirable to provide at least partial information about structural behaviour: more specifically, upper bounds on, or estimates of, elastic-plastic-creep deformations. Some simplified methods are envisaged by design codes but these require improvements. Several simplified methods are reviewed in the report might serve as alternatives to those suggested by design codes. Upper bounds in plasticity can be computed by satisfying a set of equations and inequalities and by carrying out some optimization procedure. A number of bounding inequalities can be proved. Upper bounds in creep are based on general rigorous mechanical foundations, but the applications available mostly concern particular cases employing ad hoc assumptions. The British shakedown method is considered Zarka's method is discussed, providing estimates of the mean strain in the case of elastic shakedown. The method developed by Ladevèze and coworkers is discussed. The simplification here lies in the solution process, which can be stopped after a few iterations since each one of these concern the whole time interval of interest. General material models are admitted. None of the simplified methods reviewed in the report can directly be recommended for general practical use in nuclear design situations.

Additional information

Authors: MAIER G, Technical University of Milan, Department of Structural Engineering (IT);COMI C, Technical University of Milan, Department of Structural Engineering (IT);CORIGLIANO A, Technical University of Milan, Department of Structural Engineering (IT);PEREGO U, Technical University of Milan, Department of Structural Engineering (IT);HÜBEL H, Fachhochschule Lausitz, Fachbereich Bauingenieurwesen, Senftenberg (DE)
Bibliographic Reference: EUR 16555 EN (1995) 286pp., FS, ECU 31.50
Availability: Available from the (2)
ISBN: ISBN 92-827-5006-X
Record Number: 199610112 / Last updated on: 1996-03-18
Category: PUBLICATION
Original language: en
Available languages: en
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