Assignment 1-2D Meshing Challenge

AIM: 2D Meshing the given components and assigning the thickness

OBJECTIVES: Carrying out the geometry cleanup operation, Midsurface, 2D Meshing, assigning thickness by creating a generic property on the given 3 files

Following Criteria should be followed in all three of the models-

• Creating 2D mesh with target length 5mm, min 3.5mm max 7mm
• Clean the geometry
• Extracting mid surface
• Clean mid-surface geometry
• Ignore holes less than dia 5mm
• Assigning proper thickness, by creating a generic property

1. Duplicate the parent surface model to another collector to keep the parent surface safe.

2. Organize the parent surface to another component collector and duplicate the surface and move

   *Tool>Organise>surface>set current component>select dest component>Duplicate>move.

3. We can see that there are many free edges,unsplit surfaces and surfaces are missing, to fix that we can go through following commands of quick edit panel

   *F11>toggle edges>select lines

   *F11>replace points>points>retain

   *F11>surface delete

   *Geom>surfaces>ruled>select line list 1>select line list 2>create

   *Geom>surface edit>trim with surface>select surface 1>select surface 2>trim both

   *F2>surface>select surface>delete entity

4. Toggle lines of geometry so that elements will not fail for minimum element length.

   *F11>toggle edges>select lines

5. Extracting the mid surface of the component, this component is less complex and we can go through auto mid surface command.

   *Geom>midsurface>auto mid surface>surface>displayed>extract

6. 2D mesh on the component

   *2D>auto mesh>surface>select surface>element size(5mm)>mesh type(mixed)>mesh

7. Correcting Failed elements after setting up 2D element criteria file setting *Menu Bar>preferences>Criteria file setting

   • Remesh *2D>auto mesh>elements>select elements>mesh
   • Translating node *Tool>translate>nodes>select node> direction vector N1,N2>magnitude>translate + or -
   • Quality index panel
   • Rotating nodes *Tool>rotate>nodes>select nodes>give axis>select base node>rotate + or -
   • Projecting nodes *Tool>project>to line>nodes>select nodes>select line list>project
   • Checking for free edges *Shift+F3>select component>find free edges
   • Connecting nodes *F3>select node of one element>select node of another element

8. Assigning thickness to elements by creating a property.

   -Right-click on the graphic area of model tree>create>properties

   -Rename that particular collector with the same name as mid surface and thickness

   -Select component>mid surface>right click to assign>select property>apply

   • Viewing Thickness of elements

RESULTS:

Part1-

Part2-

Part3-

CONCLUSION:

• Geometry has been cleaned up and mid-surface has been extracted
• Mid surface cleaned up
• Created a 2D mesh with target length 5mm, min 3.5mm max 7mm
• Assigned a proper thickness to all components