View Feasibility Results

Select the run and load case for the feasibility analysis, then view the results.

1. On the Feasibility tab, Analyze icon, click Show Analysis Results.
   
   
   
   The Analysis Explorer dialog opens.

   Tip: Use the chevron next to each option to view all options for runs, operations, and result types.
2. Select a run to analyze.
3. Select an operation. If you enabled Springback in the Run Options, it is available as an operation to select.
4. Select a result type.

   Result Type	Description
   Thinning	Thinning is the ratio of the change in thickness to the original thickness expressed as a percentage. A positive thinning percentage indicates a reduction in thickness, which could be of concern for the performance of the part under fatigue loading since thinner regions in the part will undergo higher stresses compared to the rest of the part. A negative thinning percentage indicates thickening of the part in regions of compression. Excessive compression may lead to wrinkles on the sheet metal, resulting in poor surface quality.
   Thickness	Thickness is the actual material thickness distribution in the part. The thinning percentage is directly derived from the thickness distribution.
   Formability	Formability describes the principal strains on the surface of the sheet metal, also known as Major and Minor strains, which are plotted against a Forming Limit Curve to identify the different deformation zones that occur during the stamping process. Each color indicates a unique deformation zone during stamping. Red: High potential for failure from splitting due to excessive deformation. Yellow: Marginal potential for failure. Green: Safe with no potential for failure. Blue: Material is compressed. Violet: Wrinkling zone with potential for failure. Cyan: Loose metal zone indicates that material is not sufficiently deformed. When you choose this option, if Shell solution is selected in the Preferences, a field appears for you to view results based on a particular material surface. Under Result Types, from the Formability dropdown, select a surface: Lower, Upper, or Membrane (middle).
   Major Strain	Major strain is the principal strain on the surface of the sheet metal due to the deformation of the initial blank shape to the finished product. The red areas indicate greater stretching relative to the blue areas. When you choose this option, if Shell solution is selected in the Preferences, a field appears for you to view results based on a particular material surface. Under Result Types, from the Major Strain dropdown, select a surface: Lower, Upper, or Membrane (middle).
   Minor Strain	Minor strain is the principal strain on the surface of the sheet metal due to the deformation of the initial blank shape to the finished product. The red areas indicate less compression relative to the blue areas. When you choose this option, if Shell solution is selected in the Preferences, a field appears for you to view results based on a particular material surface. Under Result Types, from the Minor Strain dropdown, select a surface: Lower, Upper, or Membrane (middle).
   Effective Strain	Effective strain is the strain on the surface of the sheet due to the deformation of the initial blank shape to the finished product. The red areas indicate more deformation relative to the blue areas. When you choose this option, if Shell solution is selected in the Preferences, a field appears for you to view results based on a particular material surface. Under Result Types, from the Effective Strain dropdown, select a surface: Lower, Upper, or Membrane (middle).
   Press Tonnage	Press tonnage is the force needed to form the part.
   Displacement	Displacement illustrates the displacement to the flat blank for draw and crash form operations. For a springback operation, it is displacement due to springback.

   
   
   Figure 1. Feasibility Results Showing Deformation Zones

5. Enable the various Show options to determine what is visible for the analysis.

   Option		Description
   Show/Hide Initial Shape		Show/hide the initial shape as a reference.
   Show/Hide All Loads and Supports		Show/hide loads and supports. You can also show only the current loads and supports.
   Show/Hide Deformed State		Show/hide the deformed shape as a reference.
   Show/Hide Contours		Show/hide contours.
   Options		Interpolate during animation: Animate the result contour. Blended contours: Toggle between blended and nonblended contours. Element contour: Show contours based on elements rather than nodes. This option is only avaialble for results types that are based on elements. Vector plot: Display the direction vectors for the displacement result type.

6. Enable various Callout options to show analysis results at a point of interest on your model. The callout values apply to the currently selected run and load case.
7. Use the Tracer to track how a line moves from one step to another. For more information, see Trace on a Feasibility Analysis.
8. View and record the animation of the forming results with the Animation toolbar that is located at the bottom of the modeling window:

   
   
   

9. The flattened blank shape is available as IGES and DXF files in your run directory.

Feasibility Results for Thinning