Research CommentariesMaterials Science

A Dislocation Crash Test

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Science  06 Mar 1998:
Vol. 279, Issue 5356, pp. 1489-1490
DOI: 10.1126/science.279.5356.1489

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Simulations of the behavior of complex structures--the crash of a car, for instance--can only succeed if the detailed response of materials to stress can be accounted for. In his research commentary, Gumbsch discusses results reported in the same issue by Zhou et al . on calculations of dislocations, that is, defects in the crystal lattice that influence the deformation of materials. Although the present results deal with a simple system in copper metal, the findings point the way toward more sophisticated modeling.