Step 8: Postprocess the results
Enter Postprocessing module to analyze solution
Main Menu > General Postproc
Select Results Summary.
This shows you the cyclic frequencies of the ten modes. Compare with the values in the book.
View Mode Shape for Mode 2
Read Results > By Set Numbers
Enter 2 for NSET.
Click OK.
Plot Results > Deformed Shape
Select Def+undeformed.
Click OK.
This plots the mode shape for mode 2. Similarly, look at the other mode shape and compare them with figure 11.172 in the book.
Find Mode Numbers
Table 11.171 gives amplitude values for selected d.o.f. for three nodes.
To find the node numbers corresponding to the ones in the book, turn on node numbering.
Utility Menu > PlotCtrls > Numbering
Turn on Node Numbers.
Click OK.
If you need to refresh the screen: Utility Menu > Plot > Multiplots
By comparing the node numbers, we find:
Node Numbers 
 Cook et al.  ANSYS 
16  17  
41  42  
51  32 

Determine the Displacement Amplitude
To determine the displacement amplitude at node 17 for mode 3,
General Post Proc > Read Results > By Set Number
Enter 3 for NSET.
General Post Proc > List Results > Nodal Solution
Select UCOMP.
From the list, the displacement amplitude, denoted as USUM, is 23.9e3. The corresponding value in table 11.171 is 23.8e3. Similarly, you can determine the other entries in the table. Note that the rotational d.o.f. to use for the second row in the table is ROTZ_._
Save your work
Click on SAVE_DB in the ANSYS Toolbar to save the database.