Dislocation Dynamics with a Billion Copper Atoms

A new simulation has allowed for the first time the study of the formation of complex junction structures in metals undergoing work hardening induced by tensile strain. This simulation was performed in the fall of 2000 on several thousand processors of the initial-delivery ASCI White supercomputer at Lawrence Livermore National Laboratory. This is the work of Farid Abraham of IBM Almaden Research, in collaboration with LLNL personel Mark Duchaineau and Tomas Diaz De La Rubia.


Overview Movie

This movie gives a general, qualitative overview of the billion-atom dislocation simulation in copper. The copper is a solid, but for visualization purposes only the atoms near crystal defects are shown. Notice in particular the emergence of straight, rigid junctions that are formed by a zippering action of the mobile, curved dislocations.

MPEG 480 wide -- QUICKTIME 480 wide

MPEG 640 wide -- QUICKTIME 640 wide

Interior Detail

This movie shows the details of rigid junction formation in a small part of the interior of the copper block. The curved dislocations have been partially filtered out for clarity.

MPEG 720 wide -- QUICKTIME 512 wide


A Gallery of Images from the Dislocation Movie


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