Week 4

TITLE: MESHING OF BOTTLE CAP USING ANSA

OBJECTIVE: To fix all the geometrical errors and mesh the bottle cap in the given quality criteria.

• Given quality criteria
• Now I go for geometry check, here we check for any geometrical errors like single con, cracks etc.
• Then I use auto fix option to fix the geometry and remaining which are not fixed by auto fix are fixed manually.

• After confirmation of geometry clean up I move for mid surface extraction part.
• As it is a plastic component and having variable thicknesses in different parts.
• Therefore I go for manual mid surfacing by using middle and offset options.
• First I measure the distance between the two surfaces using measure option.

• Then I use offset for the cylindrical portions and middle option for the small ribs.

• After extracting the whole mid surface its turn for inner threads, there I use middle curve option then by adding new face then selecting the two cons I create the mid for threads.

• Then I use copy rotate option for the inner ribs make single ribs and copied all other 35 using transform option.

• After completing the mid surface extraction and using the extend option to connect all the parts together.

• Now the model is ready to apply the mesh. At first I assign all the necessary quality parameters and mesh length.

• Now I started the meshing part by part and used best option for meshing and reconstruct in shell mesh for better flow mesh.
• Then I use smooth option for smoothing and check the quality parameters.
• Then I use split and paste options to improve the quality of the mesh.

• Now quality check

• Now after assuring the quality check and I assign different pid to different parts so that thickness can be assigned.

CONCLUSION:

• ANSA is very useful for preprocessing of plastic components.
• Tools of ANSA are very user friendly.
• Good quality of mesh is obtained in this model.

LINK CONTAINS THE ANSA FILE: https://drive.google.com/file/d/1rWn72-5Vunkhgxv4kcNrtrpUmFh3gfOs/view?usp=sharing