The following files were used in this problem:
xducer2d.dat -- Input file for the 2D analysis.
xducer2d.cdb -- Common database file for the 2D mesh (called by xducer2d.dat).
xducer3d.dat -- Input file for the 3D analysis.
xducer3d.cdb -- Common database file for the 3D mesh (called by xducer3d.dat).