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Molecular Dynamics Studies of Interfacial Crack Propagation in Heterogeneous Media

Published online by Cambridge University Press:  15 February 2011

John M. Corbett  and
Robin L. B. Selinger
John M. Corbett
Affiliation:
Naval Surface Warfare Center Indian Head Division, Indian Head, Maryland Catholic University, Washington, [email protected]
Robin L. B. Selinger
Affiliation:
Catholic University, Washington, [email protected]
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Abstract

We use molecular dynamics simulation to investigate the evolution of a crack front in interfacial fracture in three dimensions. We find that when a crack passes through a localized region of heterogeneous toughness, crack front waves are initiated and propagate laterally. We also investigate the development of roughness of the crack front when the crack propagates in a region of heterogeneous toughness. We find that in steady state the mean square width W of the front scales with system size L as W∼L0.35, in agreement with recent theoretical predictions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 539: Symposium M – Fracture & Ductile vs. Brittle Behavior - Theory, Modelling… , 1998 , 209
Copyright
Copyright © Materials Research Society 1999

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References

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