Blank Size Estimator- BSE module
The blank size estimation function is used to unfold a part and create a blank outline. This estimate can be used for quotation purposes and for the blank outline for an incremental anlaysis. The option menu is shown in Figure 11.1.
1. Import the part surfacing as an IGES (or other CAD) file into DYNAFORM. As with other DYNAFORM simulations, only one side of material is needed. To increase the accuracy of the blank outline, bring in the mid-line of the material thickness.
2. Mesh the surfaces with the blank mesh under preprocess/element/surface mesh
a. Select Blank Mesh
b. Under Mesh Quality edit the element size to 15.
3. Use the Check Element Size function under Preprocess/Model Check to delete all elements smaller than .1mm (default).
4. Use the Boundary display function under the Model Check menu. Fix all gaps in the mesh.
5. All plate normals should point in the positive Z direction (Preprocess/Model Check/Auto plate normal).
6. Turn off all parts except the part for blank estimation. Select the Blank Size Estimate function (BSE). Define the blank material and thickness accordingly.
7. The blank size estimate will be displayed as an outline. Make sure the line display is turned on. The fill screen function is recommended here to view the part and estimated blank outline. This outline can be exported as an IGES file or meshed in DYNAFORM to be used during the analysis as the blank.