Week 3 - 2D meshing for sheet metal
Objective :
- Checking the Geometrical error & performing the Geometry clean up on the Hood Model's all parts .
- Extracting the Midsurface of all the parts of the hood .
- Meshing the Midsurface extracted with the given Quality Criteria .
- Thickness assignement to all the parts .
Procedure :
- CAD model is imported and Geometrical errors are checked .
- Geometry check is performed on the Hood Model.
- Some Geometrical errors are corrected .
- Here Another surfaces are created as ,
- Again Geometrical check is performed on the model .
- Now this time There are now any Geometrical errors found .
- Munually midsurface extracted of the Outer panel .
- At Heming region , for avoiding the minimum length element fail , Mid line is taken and other upper and lower Cons are deleted .
- And Manual meshing is done surface by surface on the upper pannel with the given Qualtiy criteria .
- Now Hatch part is taken for the meshing .
- Here Auto midsurface is extracted .
- And Cons are deleted , where elements would have fail for the minimum length .
- MAnual meshing is done surface by surface as ,
- Now Hing parts are Taken and Geometrical check is done on the same part .
- Some geometrical error wrere found .
- This errors are corrected manually by releasing the cons and again performing TOPO operation .
- Again on performing the Geometrical check , no errors were found as
- For manual midsurface extraction , lower surface is offseted with the half distance 0.6 mm of the part .
- Hole perimeter is adjested so that we'll get the best meshine flow .
- Cons is toggled where the elements were failling for the minimum length .
- Manual meshing with the Best meshing Operation is done on the midsurface extracted of the hinge part as ,
- Now inner panel is checked for the Geometrical errors and found some errors as ,
- Some of this errors are fixed automatically and some are fixed manually as ,
- Again Inner panel is checked for the Geometrical errors and didn't found any errors this time .
- Now this inner panel is divided into half as it is symmetrical in vertical axis for most of the part .
- Half part is deleted and only half part is meshed .
- This half part is then Translated into the another half region .
- This method saved lots of time .
- Thickness is assigned to the sheel elements by measuring the Thickness of the parent geometry .
Results :
- The meshed parts of the Hood's modela are as ,
Outer Extract pannel :
- Inner Extract panel :
- Latch reinforcement :
- Hinge reinforcement :
Conclusion :
- Midsurface for all the parts are extracted .
- All parts are Meshed with the given target element length .
- Mesh Quality is Pass all the provided Quality criteria needs to be passed .
- Thickness also assigned .
MIDSURFACE EXTRACTION METHOD USED :
- Midsurface extraction is done by Auto midsurface Method.
- As there will not be any difference between the extracting the midsurface Manually and Auto midsurface .
- Auto midsurface will save your time than the Manual midsurface .
- Manual Midsurface extraction :
- Auto midsurface Extraction :
