Week 3 - 2D meshing for sheet metal

Aim : To do a Pre-Processing on a given hood model using ANSA Software

Procedure:

• Open given file in ANSA
• In given filw total of 5 parts are avaiable, So apply geometry check on each part

Checks - Geometry Check - Select part - Execute -Result

• Check for errors on a particular part if it can fix itself and apply or else try removing errors by checking i.e single cons,triple cons, face break etc
• If triple cons appear apply topo nd release con and fix the issue by changing it into double con.
• If there is a break in face then apply new face.
• After fixing all issues again chack for geometry check.
• As a part for graphics of software some parts may not appear with full curves so

Auxiliarities - Fine

• Check the thickness of the part at certain points to check for average thickness

Measure - Thickness

• If thichiness is same at all places apply offset and extract midsurface
• After extracting midsurface also check for geometry check and for this time don't apply signle cons.
• Again if errors pop up clear the errors.
• Again apply topo
• For further step apply mesh parameters as provided
• Apply

Paramters - length - Part

• Length should be around 5mm
• Check at all regions of part whether 5mm is applicable
• Make sure hotpoints should be near to adjacent surface
• Then apply mesh as follows

Mesh generation - Best - Select area

• After the mesh generated check for mesh elements failing
• To solve failed elements

Shell mesh - Reconstruction - Select failed area

• Apply same method the elements failed criteria is zero
• Make sure quad percentage should be high
• Make sure to remove trias at corners of part which causes for element failure
• To remove trias

Elements- Split - Tria

• Apply the above procedure for all parts for given components and apply mesh
• After failing element percentage is 0% apply thickness
• Go to properties of each part and apply thickness
• Then mesh for all parts is done successfully

Learning Outcomes :

• In this challenge I learnt how to clean geometry
• Learnt how to extract midsurface
• Learnt how to apply mesh parameters
• Learnt how to apply mesh and eliminate failure elements

Result :

• Midsurface is extracted from parent part
• Geometry cleanup is done
• Mesh parameters are applied
• Mesh is applies and failing elements are eliminated