User Guide

RISA-3D User’s Guide
Version 5.0
108
Tutorial 5 – Dynamic Analysis
In this tutorial we will perform a dynamic solution the model we updated in the
last tutorial. Make sure you start off correctly by opening the file mentioned next.
After starting RISA-3D click the Open File
button. In the File Open dialog
select the file named “RISA-3D Tutorial 5 Starter” and click Open. Close the
Global Parameters window by clicking OK and we will begin working in the
model view. Click to close the Data Entry Toolbar if it is open. Your
screen should look like this:
Dynamic Solution
Click on the Solve button and select Dynamic Analysis and click Solve.
This will open the Dynamics dialog in which you will be presented a numer of
options. This dialog is the “gateway” into RISA-3D's dynamic capabilities. The
entries on this dialog actually are quite simple (RISA-3D does all the hard stuff).
Just tell RISA-3D how many modes to calculate and which load combination
should be used for mass calculations.
We'll solve for 3 modes using load combination 3 to calculate mass. The other
entries here rarely need to be altered. For a complete discussion of the entries on
this dialog, see the Dynamic Analysis section in the help file.