Week 3 - 2D meshing for sheet metal

AIM:

To take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria.

OBJECTIVE:

Hood component is given with different parts.

• Latch
• left hinge &right hinge
• Inner panel
• Outer panel

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

PROCEDURE:

STEP 1:-

Open the hood component in the ANSA

check the what are different parts in the geometry

step2:-

Extract latch form the geometry and check the geometry and generate the mid surface .

To extract latch part go through with property and check the thickness.

commands to generate the mid surface.

(offset+PIDregion +select the parent geometry+middle click+give the offset value +middle click)

to extract the mid surface form parent geometry(!not+pid region +select the parent geometry +middle click)

check geometry for mid surface .

Step3:-

(ctrl+f11 to open the quality criteria)

set the given quality criteria (Apply & ok)

Then it is ready to meshing

command used to generate mesh (mesh generation--best+select entites+middle click)

solve the off elements by using 'smooth' command.

step4:-

extract the left and right hinge and make the same procedure.

extract+checking geometry

If have any geometry issues slove it (select all +right click+click on fix).

solve this type of 'off elements' by using smooth command

1. make sure that no tria elements at macros and perimeter to achive best mesh
2. solve the tria elements using commands

• swap
• split
• move

step 5:-

Extract the outer pannel

check the geometry and generate the mid surface .

start the meshing one by one entity

NOTE : After completing the meshing for every part goto 'setPID' generate property id and make sure that every meshed part

is save in same property id .

step 6:- Extratcing the inner pannel checking the geometry and Extracting the mid surface .

checking the geometry for mid surface using offset command.

generate the mesh by using best mesh commad

solve the by smoothcommand

solve tria elements

and save to mesh property ID

CONCLUSION:-

The hood component is extracted with midsurface and assigned to thickness of parent geometry and then

meshed with given quality criteria and fine mesh is achived.