Author: Brandon Runnels (brunnels@uccs.edu), University of Colorado Colorado Springs
Date: September 2019

This test computes the relaxed formation energy of a 100 symmetric tilt grain
boundary in BCC Fe as a function of tilt angle.  At each tilt angle, a grid of different
translation offsets of the two grains parallel to the grain boundary is considered, with
each grid point serving as the initial configuration for a static minimization.