Week 4- Meshing of Backdoor Challenge

                                                         Week 4

                                           Meshing of Backdoor Challenge

Aim: To mesh the backdoor geometry of a car that is provided with the quality parameters given                    below.

Quality Criteria   Value 

Aspect Ratio    5

Skewness            45

Warping            15

Taper                 0.5

Min. Length    3 

Max. Length    7 

Min angle Quad    45

Max angle Quad   135

Min angle Tria   30

Max angle Tria   110

Tria %           15

Procedure: 

• Imported the back door geometry into hypermesh.
• Checked for missing surfaces, filled missing surfaces in the geometry 
  
• The geometry was already divided into 3 parts.
• Extracted midsurface for 3 parts indivdually, assigned under the parent geometry.
• Used the offset option for missing surfaces in the midsurface.
• Did the autoclean up and toogled some lines for qulaity of mesh.
• Meshed the half midsurface and of each part with the given quality criteria.
• Used the Split Surf Line to draw lines and toggle edge options to supress lines for better mesh quality.
• Used the place node, swap edge, optimize element , smooth , drag tria element , split quad element , and combine tria to improve mesh quality.
• Used the Reflect option to mesh the other half of the parts.
• Some surfaces were not symmetrical, meshed it individually and used the equivalence option and to stitch newly meshed elements. 
  
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  Conclusion: Extracted the midsurface and meshed it with the given quality criteria. 
  
  Learning outcomes:
•  Replace nodes option to stitch elements. 
•  Reflect option. 
  
  Note : File size above 20 mb , Link for model attached in text file below. 
  
  https://drive.google.com/file/d/1g_-HjFZfUDXtGz1x2Zl0yjvJRzLhtF-x/view?usp=sharing