Title
Nonlocal modification of the Gurson-Model Nonlocal modification of the Gurson-Model
Author
Faculty/Department
Faculty of Applied Engineering Sciences
Publication type
article
Publication
Les Ulis ,
Subject
Physics
Source (journal)
Journal de physique: 4. - Les Ulis, 1991 - 2006
Source (book)
2nd European Mechanics of Materials Conference on Mechanics of Materials, with Intrinsic Length Scale (EUROMECH-MECAMAT 97), February 23-26, 1998, Magdeburg, Germany
Volume/pages
8(1998) :P8 , p. 277-284
ISSN
1155-4339
ISI
000077547500035
Carrier
E
Target language
English (eng)
Abstract
The mesh dependence of some problems in damage mechanics is assumed to be mainly due to errors introduced by the homogenization process. To correct these errors, a nonlocal formulation is proposed. As in the nonlocal theory of elasticity the formulation of the internal work has been extended by a nonlocal term. From a global statement of equilibrium for a structure composed of representative volume elements (RVE's), equations are obtained which have to be satisfied for every single RVE. In order to deal with a two-dimensional problem, only the case of long cylindrical voids in a ductile matrix material under generalized plane strain conditions has been considered. The resulting nonlocal modification of the yield condition will be discussed.
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