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Problem Specification
1. Start-up and preliminary set-up
2. Specify element type and constants
3. Specify material properties
4. Specify geometry
5. Mesh geometry
6. Specify boundary conditions
7. Solve!
8. Postprocess the results
9. Validate the results

Step 8: Postprocess the results

Enter Postprocessing module to analyze solution

Main Menu > General Postproc

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This plots the mode shape for mode 2. Similarly, look at the other mode shape and compare them with figure 11.17-2 in the book.

Find Mode Numbers

Table 11.17-1 gives amplitude values for selected d.o.f. for three nodes.

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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,

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From the list, the displacement amplitude, denoted as USUM, is 23.9e-3. The corresponding value in table 11.17-1 is 23.8e-3. 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.

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