Mid-Surfacing and Meshing of Floor Panel using HyperMesh

Objective

To extract the midsurface of the Floor panel and perform meshing according to given quality criteria.

Procedure

• Mid Surface Extraction

1. Thickness of the trim is less than 6mm, so checking the thickness of the trim at various locations such as edges,ribs, dog houses and at the bolt surfaces.
2. Thickness of the trim is unifrom over the entire geometry, so we manually extract the mid surface of the trim.
3. The top surfaces of the panel lying in the same plane are selected using "select by face" option.These surfaces are duplicated and offsetted by a distance of 0.375mm into the surface.These duplicated surfaces are saved under a new component. Fig:Panel MidSurface

• Meshing

1. For meshing,mixed element type with the target element length of 5mm is used.Minimum length and maximum length are 2mm and 8mm respectively.
2. Surfaces are meshed in smaller sections.Remeshing the surfaces to get better flow. Fig: Meshed Surfaces (Sections)
3. Perform the quality check to check for the failed elements,and fix them.
4. Check for the opposite trias on the surface and remove them.
5. Check for the rotating quads and remesh those elements. Fig: Rotating Quad Fig: Remeshed Surface
6. Check for free edges present in the surface and eliminate those.
7. Create a new property and assign the thickness to the mid surface components.

Fig:Floor Panel

Learning Outcomes

• Manual midsurface extraction.
• Create midsurfaces for failed parts by extracting a midsurface from two faces that represent the two sides.
• Capturing of bead like surfaces.