The following files are used in this problem:
semicircular_surface_flaw_model.dat -- Input file for the analysis of the semicircular surface flaw in the rectangular plate.
xjoint_pipe_with_warped_flaw.dat -- Input file for the fracture analysis of the x-joint model.
xjoint_pipe_with_warped_flaw.cdb -- Common database file for the x-joint finite-element model (called by xjoint_pipe_with_warped_flaw.dat).