. How do I apply a harmonic displacement on a surface in a transient structural analysis?
Can I use a function or do I have to use a table? Is there an example I can refer to?
I have a given amplitude and frequency.

You can define it as a function in ANSYS.

GUI pick: Parameter > Functions > Define/Edit
Function Editor dialog pick (all buttons): SIN 2 *
Function Editor dialog pick: Open the pulldown of ANSYS Primary Variables and select TIME
Function Editor dialog pick: In the Results= entry region click after the last parenthesis to move the insert cursor there
Function Editor dialog pick (all buttons): * 5 ENTER GRAPH
Drag both dialog boxes off the graphics area if using the 3D driver
Plot Information dialog box: X range of 0 to 6.3 and specify 50 points then OK.
Review plot in graphic area then pick Close.
Function Editor dialog pick: File > Save then specify the location and name then OK.

To create the table parameter pick Parameters > Functions > Read From File then select the previously created file and Open.
Enter a new Table parameter name (it should not be dimensioned so just enter the name) then OK.

The number 2 in the example above affects the frequency and the 5 affects the amplitude. Section 2.6.15 of the "ANSYS Basic
Analysis Guide - ANSYS Release 9.0" discusses the Function Editor. Once you read the func file into a table parameter you
can use the table parameter as a load but you cannot edit it with the array editor tool or list it with *STATUS.

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