A New Trend in Plasticity: Strain Gradient Theories

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F01%3A01065537" target="_blank" >RIV/68407700:21340/01:01065537 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A New Trend in Plasticity: Strain Gradient Theories
Original language description
The recent renewed interest in the strain gradient plasticity has been motivated mainly by the experimental evidence that plastic flow processes in crystalline solids are inherently size dependent. However, similarly as in the previous attempts to introduce formally strain gradients into plasticity the current theories have failed to reflect the underlying physical mechanisms. Their range of validity has remained uncertain. The two major problems in the gradient theories are the choice of the gradientswhich are to be used and the formulation of adequate constitutive equations for them. This paper indicates that the problems can be overcome by putting the theoretical framework in correlation with microscopic observations. For the case of shear bands itis shown that an advanced non-local plasticity model need not be a curve fitting procedure providing that the constitutive equations for additional degrees of freedom (strain gradients, directors) are based on knowledge of the mechanism
Czech name
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Czech description
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Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of International Workshop Research Activities of Physical Departments of Civil Engineering Faculties in the Czech and Slovak Republics
ISBN
80-7204-201-7
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
29-34
Publisher name
Technical University
Place of publication
Brno
Event location
Křižánky
Event date
Jun 26, 2001
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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