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.