Project 1 - 2D meshing on the instrumental Panel

 Aim 

       To take mid surface of the given instrumental panel and mesh it with the given quality criteria

Theory  

        The instrument panel substrate or dashboard of a car is a sub component of the car. The instrument panel is usually made of plastics such Acrylonitrile-butadiene-styrene(ABS) or Poly carbonate alloys. Its contain Speedometer, Techometer, Odometer, fuel gauge and so on. the external surface has a uniform thickness  

Procedure

Step 1: Import the Geometry

          Open ANSA software go to file-> open->select the geometry component 

    

Step 2: Topo and Geometry clean up

Go to topo module-> faces-> topo apply on the component  

For geometry clean up go to tools->check-> geometry than execute the command the list of errror will display its can be single cons triple cons needle or convex 

These error can be fixed either by Automatically (Right clicked on the mouse an addition list pops-up, click on fix) or manually. It can be done either completely or part wise of the parent geometry

Step 3: Measurement 

Take the measurement of instrumental panel at different location of the main part, dogs houses and Ribs

Measurement of dog house 

Simialrly other parts of the component is measure

Step 4: to take mid surface 

Manual mid surface 

for Main part: since main part has similar thickness so offset method is used 

           go to Topo module -> faces-> offset -> click on feature area select the surface and assign the offset value

for Dog houses: Middle method and Curve metod 

           go to Topo module -> faces ->MIddle -> single -> select both side of the ribs also curve are created.

for Ribs: offset method 

            go to Topo module -> faces-> offset -> select face and give offset value.

 Step 5: Assigning quality criteria and Mesh parameter

As per the given quality parameter 

     

Step 6: Performing Meshing 

1. for main parts: Batch mesh is performed  

Go to list model browser select the main part (mid surface) as shown below

Now go to Batch mesh -> new -> meshing scenario -> double click on contents 

the below tab will pop-up

• For Dog houses and ribs: Manual mesh is done 

Go to mesh module -> mesh generation -> spot mesh or best mesh is applied than after reconstruction is done

                         Fig: without thickness

Step 7: Assigning thickness 

Measure the thickness of parent geometry(imported geometry) and assign on child (mid surface)

                                         Fig: with thickness

Learning outcome 

• To perform Geometric clean up
• Assigning PIDs for different parts 
• Mid surfacing for different complex geometry
• Batch meshing
• Creating better mesh flow
• Reducing the element error

Conclusion 

       for the given dashboard of a car mid surface is extracted and meshing is performed as per the quality criteria. Also mesh improvement is done.