Week 4 - 2D Meshing for Sheet Metal

Aim:-

For the given CCB CAD model, Check for the Geometry cleanup (if required), Take the mid surface, and Mesh it with the given 2D element Quality criteria. 

OBJECTIVE-To assign the property on each part with their parent component thickness and then mesh the component with target size 5mm and as per given quality parameters.

Sr. No	Quality Criteria	Value
1	Target/Average Length	5
2	Minimum Length	3
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 angle tria	30
11	Maximum angle tria	120
12	Tria percentage	15

PROCEDURE-The cad geometry is open in the Ansa for Meshing, the file is open, The cad component to extract the middle surface and mesh the component

• After importing the geometry do the topo and geomtry check and clear the geomtrical error
• after geometrical error taken mid surface of the model by using offset command
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• Meshing: It is the finite element analysis process that divides the component at finite surface by giving the nodes and the element to solve for mathematical equations in analysis software. 

  To adapt mesh the component changed to the length of the target element size of meshing which 5mm. and the quality parameters value is given in the quality parameter option

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• Failed elements and Fixing them-The elements are failing for minimum and maximum length they are fixed by re-meshing it or moving them in a particular direction, this option clears the failing criteria.

• RESULTS-The mesh is obtained significantly on each component fixing them by using several options in the mesh panel. as the symmetric surfaces are deleted and meshed on single surfaces but the as a result on the outer panel the mesh is not connected as it used with auto paste option but it not working as well.But the elements that are failing are fixed and the quality result is obtained with less trias percentage

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