Please follow the tutorial given in the link below:

http://www.mece.ualberta.ca/tutorials/ansys/IT/Harmonic/Harmonic.html

Thanks Ruban. But I'm asking about a 3D model to which a base sinusoidal acceleration has been applied,

How do you apply the acceleration in MECH APDL? how do you obtain the sinusoidal dynamic responses (disp, vel, etc) as a function of time? I understand you can select a node to obtain its response as a function of frequency, but what about the time-based response?

Hi Daniel, For getting the time-history of response, you may perform the Transient Analysis as given in the tutorial specified in the link below.

http://www.mece.ualberta.ca/tutorials/ansys/IT/Transient/Transient.html

For applying the acceleration, Follow the tutorial in the link given below. You have to apply it as load.

Are you trying to perform earthquake analysis?

http://www.mece.ualberta.ca/tutorials/ansys/IT/Density/Density.html

I meant a sinusoidal acceleration due to an applied sinusoidal force. Just like in vibration testing.

You can do it by writing a macro. It can be found in my paper "Implementation of active seismic control of a building frame using ANSYS With the application of Active Tuned Mass Damper (ATMD)"

The paper can be downloaded from my profile page. A sample code is also given in the Appendix.

The line ACEL,XG(dt,1) applies acceleration in X direction.

Thanks...I'll check it out.

Hello,

I want to simulate a harmonic base acceleration for a beam in Ansys 14.5 and finally compare with experiment. I used ACEL; but the obtained result does not match with the experimental. Do you have any suggestion for solving it? 

Following