Modal and seismic analysis of a 2D frame

[Anonymous]

Hi 🙂 I would be grateful if you help me with this issue..i have to do a modal and seismic analysis of a 2D triangular frame...so that

1/ do i have to check load to mass coversion/ mass direction only in X-dir. and what would be the coversion direction then

2/ modal analyse- while filling modal analysis parameters i have to check only active mass direction in X

3/ seismic analysis-what i have to fil in direction definition window

thanks 😉

[Artur.Kosakowski]

Try to start from these examples:

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/seismic-loading/m-p/3249356

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

yes i know how to do it for a 3d model but is this the same when we are talking about a 2d frame it works only in its own plane ..I'll do this only in SAP 2000 and it seems to be different but thanks for your answer

[Artur.Kosakowski · Accepted solution]

Hmm. I'd say that the model on your picture is a 3D one

I assume that you want to define only one direction of the excitation. In such case follow the steps shown in the attachment.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.