Abstract
We present large scale molecular dynamic (MD) simulations in bcc iron containing a relatively long Griffith crack loaded in mode I at a temperature of K and 300 K. We use N-body potentials of Finnis-Sinclair type. The paper also includes a stress analysis performed in the framework of anisotropic fracture mechanics and on the atomic level as well. It enables us to understand why at 0 K brittle fracture in MD is detected, while at 300 K ductile behavior at the crack front in MD is monitored, starting from the free sample surface.
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References
J.R. Rice: J. Mech. Phys. 40 (1992) 239.
G.E. Beltz and L.L. Fisher: Multiscale Deformation and Fracture in Materials and Structures. Kluwer, Boston, 2001, p. 237.
A.S. Argon, G. Xu, and M. Ortiz: Fracture-Instability, Dynamics, Scaling, and Ductile/Brittle Behavior, Materials Research Society, Vol. 409, Pittsburgh, 1996, p. 29.
M. Mullins and M.A. Dokainish: Philos. Mag. A 46 (1982) 771.
S. Kohlhoff, P. Gumbsh, and H. Fishmeister: Philos. Mag. A 64 (1991) 851.
V. Shastry and D. Farkas: Modelling Simul. Mater. Sci. (1996) 473.
A. Machova, G.E. Beltz, and M. Chang: Modelling Simul. Mater. Sci. Eng. 7 (1999) 949.
G.E. Beltz and A. Machova: Scripta Materialia 50 (2004) 483.
P.G. Marsch, W. Zielinski, H. Huang, and W. Gerberich: Acta Metall. Mater. 40 (1992) 2883.
T. Smida and J. Bosansky: Mater. Sci. Eng. A 287 (2000) 107.
A. Machova and G.J. Ackland: Modelling Simul. Mater. Sci. Eng. 6 (1998) 521.
G.J. Ackland, D.J. Bacon, A.F. Calder, and T. Harry: Philos. Mag. A 75 (1997) 713.
A. Machova: Comput. Mater. Sci. 24 (2002) 535.
S.J. Zhou, D.M. Beazley, P.S. Lomdahl, A.F. Voter, and B.L. Hollian: in Advances in Fracture Research, Proc. ICF9, Sydney (Eds. B.L. Karihaloo et al.), Pergamon, New York, 1997, p. 3085.
J. Pokluda and P. Sandera: Metall. Mater. 33 (1995) 375.
G.J. Dienes and A. Paskin: J. Phys. Chem. Solids 48 (1987) 1015.
A. Machova and M. Landa: Res. Rep. Z1210/95, Inst. of Thermomechanics, Acad. Sci. CR, Prague, 1995.
H. Tada, P. Paris, and G. Irwin: The Stress Analysis Handbook. Hellertown Del Research Corporation, Hellertown, PA, 1973, D1–3.
A. Machova and A. Spielmannova: in Proc. Conf. “Computational Mechanics”, Castle Nectiny 2004, (Ed. Jan Vimmr), West Bohemia University, Plzen, 2004, p. 285.
Y. Murakami (ed.): Stress Intensity Factors Handbook, Vol. 1, Pergamon, Oxford, 1988, p. 67.
J.R. Rice: J. Mech. Phys. Solids 22 (1974) 17.
Y. Sun and G.E. Beltz: J. Mech. Phys. Solids 42 (1994) 1905.
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Pelikan, V., Hora, P., Machova, A. et al. Brittle-ductile behavior in 3D iron crystals. Czech J Phys 55, 1245–1260 (2005). https://doi.org/10.1007/s10582-005-0132-9
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DOI: https://doi.org/10.1007/s10582-005-0132-9