Dislocation loops in Cu as a shock wave passes through it
We analyze the molecular dynamic simulation data to study the dynamic evolution of the dislocation loops in Cu when a shock wave advances in time through the system. The simulation was carried out by CINT user Tim Germann (T-1/LANL). The simulation is carried out for 57 time steps. The data is provided with coordinates in space and the identification of atoms either lying in a dislocation loop or in a slip plane. The data is multidimensional. It has two functions (identity of atoms which are on the dislocation lines or slip planes) which vary in three dimension with time (t), i.e., f_i(X,Y,Z,t) where i=1,2.
The dislocation loops move and grow in different planes in space. To understand their formation and growth one needs to have a precise knowledge of the relative positions of the loops in space. The 3D-stereo capability provides a solution to this problem. Since a stereo system can resolve the depth in space. Thus it is very useful for further analysis of topologically complex data sets. VIZ@CINT is equipped with 3D-stereo capability.
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Fig. 1. The atoms lying on the dislocation loops are shown in red color and that on the slip planes in white color (See Fig. 1, play the animation). To give a feeling of how complicated the loops are in space, we show this animation at a fixed time step. The moving 3D object mimics the 3D-stereo display, and it is helpful when a stereo system is not available. The movie is created by running a python script which controls the rendering in ParaView.