Hello Sanjay,

do you define the ground motion in your model using Displacement boundary condition? Basically, you can define the motion in all 3 different directions. If you want to have different Amplitudes for different directions, then you can create Displacement boundary condition for each direction, and then apply different Amplitudes for each.

Sincerely,

Pavlo

Hi,

You can apply horizontal and vertical ground motions as follows:

Load- boundary condition manager- create-Acceleration/Angular acceleration-continue-

Then select the region on which you want to apply the motion.

In the next step, you should choose the horizontal direction (A1) and assign the amplitude values of that direction. After that, you should repeat these steps for the vertical direction (A2) and assign the amplitudes that you want.

You can also assign displacement instead of acceleration.

Best,

Farzaneh

Hello Sanjay,

You can do this as suggested by Pavlo Pavliuchenko and Farzaneh Abedini .

Best,

Sandeep

Thankyou all for the reply ...but applying acceleration time history or displacement time history in two different steps for vertical and horizontal directions will not ensure combined response in the output...I am interested in combined effect due to simultaneous ground motions, which would be the actual scenario during a seismic activity.