The RELDISP module uses the interpolated complex ATF produced by MOTION to compute the relative displacements at different selected nodes.

RELDISP produces and output file with the computed maximum nodal relative displacements. This module also produces nodal relative displacement complex Transfer Function and the relative displacement time histories

RELDISP can also generate also compressed binary databases for the computed SSI response relative displacement histories

RELDISP can also be used to combine the X, Y and Z input direction element component output histories from the three directional binary databases.