The onset of void coalescence during dynamic fracture of ductile metals

Details The onset of void coalescence during dynamic fracture of ductile metals The onset of void coalescence during dynamic fracture of ductile metals

2004-10-24

arxiv.org/abs/cond-mat/0410613v1

Phys. Rev. Lett. 93, 245503 (2004)

Physics

Condensed Matter

Materials Science

Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.93.245503

Molecular dynamics simulations in three-dimensional copper have been performed to quantify the void coalescence process leading to fracture. The correlated growth of the voids during their linking is investigated both in terms of the onset of coalescence and the ensuing dynamical interactions through the rate of reduction of the distance between the voids and the directional growth of the voids. The critical inter-void ligament distance marking the onset of coalescence is shown to be approximately one void radius in both measures.

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