The Ansys Mechanical application enables you to apply velocities from an Motion analysis as loads in a downstream Harmonic Acoustics analysis. Towards that goal, in the Ansys Workbench project schematic Solution cell of an Motion system can be linked to the Setup cell of a Harmonic Acoustics system. This enables Workbench to perform a Fourier transformation to convert time varying data to frequency varying velocities, then transfer structural velocities and map them on the acoustic mesh.
For more information related to Harmonic Acoustics analysis, refer to One-way Acoustic Coupling Analysis in the Mechanical User's Guide.