Week 3 - 2D meshing for sheet metal

Week - 3

For the given Hood model, Take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria. (Refer the table Below for the Quality criteria)

S.No	Quality Criteria	Value
1	Target/Average length	5
2	Minimum Length	2
3	Maximum Length	7
4	Aspect	3
5	Warpage	15
6	Skewness	45
7	Jacobian	0.7
8	Minimum Quad Angle	45
9	Maximum Quad Angle	135
10	Minimum Tria Angle	30
11	Maximum Tria Angle	120
10	Tria Percentage	15

The following process is to be followed for meshing

• Open the Ansa work bench ANSA v22.1.0.
• Import the Car hood model by going to the user/Downloads/Car_Hood

• After importing the model switch to the cross hatches.
• Then clear the geometry got to geometry check and execute the if there are geometric error the select all and fix the geometry.

• And then Rerun the geometry check.
• Now go to the Mesh and select the length option and select the car hood and put target length as 1 to 5.

• Creating the mid surface to the given model can be generated by using the mid surface option
• Giving the correct width and dividing by 2 will give us the mid surface of the given model.
• Every time to execute any program we need to middle-click the mouse.
• The PID's for all midsurface components are set.

• After the mid-surface is generated we can go for meshing.
• To generate mesh we can use the Mesh Generation option or the 'Best' option.
• Selecting the model and hitting the middle mouse click will generate the mesh.
• By Giving quality criteria there are some min length components needed to be avoided.

• Again select the model and middle click to regenerate mesh.

• We can use Smooth Option too to smooth the mesh construction.
• selecting the Smooth option selecting the model and middle click.
• The Geometrical check, Topology, Mid surface and Meshing according to Quality criteria has been successfull done of the give car hood model.

The Geometical ckeck, Topology, Mid surface and Meshing according to Quality criteria has been successfull done of the give car hood model.