For general analysis steps an undeformed plot displays the shape of your model without any deformation. For linear perturbation steps an undeformed plot displays the base state of your model. Model and analysis characteristics such as surface definitions can cause the appearance of your undeformed model to vary from step to step; you can select the step and frame at which to display your undeformed plot. For more information, see “Selecting the results step and frame,” Section 24.2.
To produce an undeformed shape plot:
Use the File menu to open the output database containing your model data. For the purpose of undeformed plotting, analysis results need not be available; an output database resulting from a datacheck run is sufficient.
Use the Result menu to select the results step to display.
Select the plot mode-independent and undeformed shape customization options that you want.
From the main menu bar, select Plot
Undeformed Shape.
Tip:
You can also produce an undeformed plot using the 
tool in the toolbox.
The current viewport displays a customized undeformed plot at the specified step and frame of the current output database. ABAQUS/CAE is now in the undeformed plot mode.
In this mode ABAQUS automatically refreshes your undeformed plot each time you click Apply in the results, plot mode-independent, or undeformed plot option dialog boxes. The current viewport will remain in the undeformed plot mode until you produce a plot in some other (e.g., contour, deformed) mode.