Week 4- Meshing of Backdoor Challenge
Week 4- Meshing of Backdoor Challenge
Aim: To perform the geometrical cleanups, mid-surfacing and meshing of the given hood geometry.
Objective:
<!-- [if !supportLists]-->· <!--[endif]-->Cleaning up the geometry.
<!-- [if !supportLists]-->· <!--[endif]-->Enclosing the model without any free edges.
<!-- [if !supportLists]-->· <!--[endif]-->Extracting the mid surface from the model.
Procedure:
1] Given .IGS file is imported to the hypermesh.
2) The geometry colour mode has to be changed to ”By topo”. With colours, error rectifications can be done easily.
3) Through GEOM-Quick Edit----Filler surf option is used to fill the surfaces with fewer errors. If any major broken geometry it must be fixed manually.
4) Given quality criteria file is entered into the hypermesh.
5) The given model is identified as sheet metal as it contains the overall same thicknesses (0.75) all over the model.
6) Mid-surfacing is done through auto midsurface using skin offset for uniform thicknesses (Sheetmetal).
7) If there are any close edges it can be toggled.
8) The meshing process can be initiated if the geometrical cleanups are done well.
9) Manual mesh is done and mesh flows are corrected accordingly
10) By using the quality index option mesh flow and trias can be corrected for better mesh flow.
12) Also the important commands used for the reduction off elements and good mesh flow are
<!-- [if !supportLists]-->· <!--[endif]-->Rebuild Mesh
<!-- [if !supportLists]-->· <!--[endif]-->Geom—Nodes Edit
<!-- [if !supportLists]-->· <!--[endif]-->Tools—Edges (After reflect command to merge elements)
<!-- [if !supportLists]-->· <!--[endif]-->Quality Index
Course Outcomes:
<!-- [if !supportLists]-->· <!--[endif]-->Proper geometry cleanups.
<!-- [if !supportLists]-->· <!--[endif]-->Auto mid-surfacing using the Skin offset command.
Result:
Geometrical cleanups, proper mid-surfacing and meshing are done as per the requirement.
