CYCLIC CRACK-GROWTH IN ELASTIC-PLASTIC SOLIDS - A DESCRIPTION IN TERMS OF DISLOCATION THEORY

Authors
RIEMELMOSER FO PIPPAN R KOLEDNIK O
Citation
Fo. Riemelmoser et al., CYCLIC CRACK-GROWTH IN ELASTIC-PLASTIC SOLIDS - A DESCRIPTION IN TERMS OF DISLOCATION THEORY, Computational mechanics, 20(1-2), 1997, pp. 139-144
Citations number
15
Categorie Soggetti
Mechanics
Journal title
Computational mechanics → ACNP
ISSN journal
01787675
Volume
20
Issue
1-2
Year of publication
1997
Pages
139 - 144
Database
ISI
SICI code
0178-7675(1997)20:1-2<139:CCIES->2.0.ZU;2-L
Abstract
Whenever the plastic deformation is in the order of some Burgers vecto rs, it appears to be reasonable to describe crack tip plasticity by me ans of ''mathematical'' dislocations. A discrete dislocation model is presented for the simulation of mode I fatigue crack propagation. In o rder to take into account the crack face contact behind the crack tip a procedure was developed which enables the computation of the disloca tion motion even when crack closure occurs.