Project-2-Meshing of Door Inner Panel Challenge

AIM:

To take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria,for the given side door inner panel model.

GIVEN DATA:

Steps involved in the procedure:

1. To check all the geometry error and to fix them.
2. Mid surface to be made for all the geometry.
3. To generate mesh with the given quality criteria.

PROCEDURE:

• Open the hypermesh software.
• Import the given hood model from the import geometry option
• In hypermesh we can import all the CAD Software file formats like IGES,STEP,etc.
• And we have to do midsurfacing for the component
• to mesh the component within the given criteria.

Given model:

STEP 1:

• After importing the model check whether there are any solids present in it.
• If any solids present in the component, then we have to delete them.
• For that go to Delete>solids and select the component and click on delete.
• In this component, there are no solids present. So we proceed for geometry cleanup.

STEP 2:

• After deleting the solids, we have to check whether there are any geometry errors.
• Now to perform geometry cleanup, go to the Geometry> autocleanup option and select the model and press middle mouse button. '
• Autocleanup option automatically clear geometrical errors present in the model.

STEP 3:

• After geometry cleanup, we proceed for midsurface extraction.
• before midsurface extraction we will cut the given model into 4 different parts and generate mid surface separately.
• Go to Geometry >> surface edit >> trim with surf/plane >> select displayed surfaces >> select the axis about which we want to cut >> select the base point >> click on trim.
  
• now we can see that the component is divided into 4 parts,we now go for midsurface extraction.

• go to Geometry>>midsurface option. Choose the auto midsurface option and select all the surfaces. Then click on extract option.

STEP 4:

• After doing the midsurface we have to go for meshing .
• before that we have enter the quality criteria and target element length.

STEP 5:Meshing

• we can use two types of mesh auto mesh and batch mesh
• Go to 2D or press f12>> Automesh>> select the surface>> provide element length of 5 mm>> choose mesh type as ‘mixed’ >> element to current surface >> select current component as symmetric one >> Keep connectivity >> click on mesh

meshed parts

• Now connect the elements of these 4 body parts. For this go to Tool >> Edges >> Select all elements >> click on preview equiv >> click on equivalance

• now we have check for element failing.go to mesh>>check>>element>>quality index.This is the final mesh containing all the components.

The tria percentage is 2.1%

After that we have to add material and thickness.

• go to create material >> choose Card Image 'MAT 1'
• go to create Property >> choose Card Image ' PSHELL' and thickness 1mm

LEARNING OUTCOMES:

• I can now able to generate geometry clean up and property Ids
• can do mid surface for any component
• understood how to do mesh for complex geometry

CONCLUSION:

Thus, for the given side door inner panel, the mid surface for the component is generated and the geometrical errors are identified and fixed and meshing for the component with the given element Quality criteria is done and thickness is assigned.

since the file is larger than 20 mb i uploaded in my drive and shared it-https://drive.google.com/file/d/1I2h3RrSP1h9ovtNTctHEgPFwE5yX4rKX/view?usp=sharing