Tutorial A5: Set Up the Model and Analysis Type

1. Start Autodesk Inventor Nastran.
2. From Open, navigate to the C:\Users\Public\Public Documents\Autodesk\Inventor Nastran 2022\Tutorial\en-us\Inventor 2022 folder and open RSA.ipt.
3. In Inventor Nastran, click File, Save As and save the part with another name, such as RSA_1.ipt. This allows you to reuse the original part.
4. Click Environments > Autodesk Inventor Nastran.
   
5. In the Part tree, right-click Analysis 1 > Edit. Set the Analysis Type to Shock/Response Spectrum.
6. On the Output Controls tab, select Displacement, Velocity, Acceleration, and Stress.
7. Note that the Options tab has a Spectrum Data section with options specific to this analysis type. Set these options as shown below:
   
8. On the Tools menu, click Document Settings > Units. Set the Length unit to inch, and the Mass unit to lbmass. These will now be the default units.
   Note: You can also set units for the analysis on the Part tree by right-clicking Units > Edit and selecting a Unit System that uses inch and lbmass.