Computer simulation of crack propagation: lattice trapping
- 20 March 1981
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 14 (8) , L171-L176
- https://doi.org/10.1088/0022-3719/14/8/002
Abstract
Lattice trapping is an unexpected result obtained in a number of atomistic treatments of crack propagation. Molecular dynamic simulation was used in the present investigation to study crack behaviour. Using a large two-dimensional sample of about 11000 atoms and a relatively long-range Lennard-Jones potential, lattice trapping is found to be a negligible effect. Sample size effects and the non-linearity of the modulus were studied and found not to affect the lattice trapping result. Negligible lattice trapping seems to be a consequence of the range of the potential; long-range continuous potentials produce negligible lattice trapping.Keywords
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