Extracting manual mid surface and meshing of the floor panel model using hypermesh software
*aim:-
clean up geometry,create midsurface and meshing on its as per quality criteria.
*methodology:-
1) import a model
2) clean up geometry
3) create midsurface
4) meshing as per quality criteria
5) check for free edges:-
6)provide the thickness
1) import a model:-
-The format of the file is hm, then first of all select import solver deck command, choose import model and select file from our folder.
-after that choose import opction for import it.
-but it is not visible on our screen due to graphical issue , for that use f key and then its visible.
-here not seen lines perfectly, it means not seen surfaces properly, for that use topo commnd.
2) geometry cleanup:-
-after the mid surface extraction next step is geometry cleanup.
-it is required for achieve better result of mesh flow.
-if distance between two adjustance surfaces is lessthen the value of minimum size given by the designer, then its always fail for minimum size, due to that geometry cleanup are main part of any preprocessing software.
-all components after mid surface & geometry cleanup:- 
3)create midsurface:-
-after that next step is midsurface creation.
-we crate manual midsurface on all surfaces. for that use offset command.(geometry>surface edit>offset)
-here, the thickness of every surfaces arte 0.75mm, then for mid surface creation we provide offset value is 0.375 mm(0.75/2)
4) meshing as per quality criteria:-
-now next step is meshing on all components as per given quality criteria.
-Target Element Length = 5mm
| S.N | Quality Criteria | Value |
| 1 | Aspect Ratio | 5 |
| 2 | Skewness | 45 |
| 3 | Warping | 15 |
| 4 | Taper | 0.5 |
| 5 | Min. Length | 2mm |
| 6 | Max. Length | 8mm |
| 7 | Min angle Quad | 45 |
| 8 | Max angle Quad | 135 |
| 9 | Min angle Tria | 20 |
| 10 | Max angle Tria | 120 |
| 10 | Tria % | 10 |
-for that we use automesh command.(2D>automesh)
-after that remesh of the component some elements by elements for best result of meshing.
-after that process:-
6) check for free edges:-
-now we check any free edges are available in a model or not.
-for that first of all go to the edges command.(Tool>edges)
but here we seen that there are no free edges are available.
7)provide the thickness:-
-for that first of all create new various property based on variation of thickness.
-here, there are no variation in thickness, then we create only one property.
-after that process:-
*conclusion:-
-the given Floor panel geometry of car model is good as per quality criteria.