ATOMISTIC MODELING OF CONTRIBUTION OF DISLOCATIONS TO CRACK OPENING DISPLACEMENTS

Authors
MACHOVA A KROUPA F
Citation
A. Machova et F. Kroupa, ATOMISTIC MODELING OF CONTRIBUTION OF DISLOCATIONS TO CRACK OPENING DISPLACEMENTS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 185-188
Citations number
7
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
234
Year of publication
1997
Pages
185 - 188
Database
ISI
SICI code
0921-5093(1997)234:<185:AMOCOD>2.0.ZU;2-B
Abstract
Dislocation emission from the crack tip in the b.c.c. lattice of alpha -iron under quasistatic loading in mode I is modelled by means of 2D ( plane strain) molecular dynamic simulations, using two different inter atomic potentials. The calculated crack opening displacements (GOD) be tween the atoms are compared with the COD in continuum treatment. The stress conditions at dislocation emission and at microcrack initiation and ductility criteria are examined. (C) 1997 Elsevier Science S.A.