Week 12:Project-1-Meshing of Door Inner Panel Challenge

AIM: To extract the mid surface and mesh the given model

PROCEDURE:

Step 1:-

• Import the given model into the software
• Below image shows the initial CAD model
  
• Look for any damaged surface and unstiched edges and correct the same by filling the surface or toggle edges
• Measure the thickness of the model
• Since it is a plastic model whole component might not have uniform thickness
• Take mid surface of different thickness in different collectors

Step2:-

• Take mid surface of each portions of having same thickness
• Assign the quality criteria which is mentioned above before starting the mesh
  

Step 3:-

• Once we start meshing , mesh the component portion by portion , so that mesh flow will be proper
• Go to options keep the mesh and split the surface as required
• kee[ the option as advanced remesh when meshing is done
• Taking mid surface for ribs is diffrent from other parts
• Firstly defeature the small fillets arround ribs
  
• After defeaturing the fillet, take midlle line of the ribs by lines option
  
• Now the mid line will be projected on the adjacent mid surface where it has to be connected

Step 4:-

• Project the line on the mid surface and split the surface using the projected line as shown below
  
• Now connect the both lines using surface ruled option
• Extraction of rib mid surface is done

Step 5:-

• Now to create mid surface for doghouse
• since the thickness of mid surface is more than 6mm, mid surface will be taken like shown above
• Firstly create mid line fromeach faces of the feature, as shown in below image
  
• Do it on all the sides, so that four lines will be creared as shown below
  
• Using the above lines create surface by surface ruled option
  
• In the above image , we can see there is no conection between surfaces
• So go to surface edit>trim with surfs/plane select both surface , enable trim both option
• Both the surface will be now joined together, extend the bottom edge to mid surface below
  

Step 6:-

• The feature shown in below image, it is not needed to capture the edge of feature, it is important to capture the hole( as mentioned in question)
  
• Inorder to capture the hole , project the hole on the mid surface , so that outline of the hole will be there on mid surface
• Now using the line, go to surface edit>trim with lines option split the surface as shwon below
  
• Delete the inside surface and now the hole feature will be captured
  
  

Step 7:-

• In same the mid surface will be taken to all parts of different thickness
• Final mid surface is shown in below image
  
• Next is to mesh the surface portion by portion
• Fix the quality issues immediately, using cleanup tools
• The below image shows there is no quality issues in the generated mesh
  

Step 8:-

• Now we have to create property card, right click>create>property
• Create property card for each thickness
• Assign the respective property card to the component, as shown in below image
  
• Final result is shown below
  
  
  Final result with thickness
  

CONCLUSION:

• Understood how to create mid surface for varrying thickness model
• Understood how to create mid surface for features like Rib
• Understood how to join the different surfaces