Week 5

Objective : To mesh the given model with the volume mesh and check for tetra collapse.

• Import the geomentry to the ansa software and checmfor geomentry errors.
• Add the criteria values and clean the geomentry according to criteria.
• Mesh the geomentry with tria elements and clean the failed elements.
• Define the geomentry as closed volume.
• Tetra mesh the geomentry as volume mesh.

Procedure :

Step 1 : Import the geomentry to the ansa software and add topo to the imported geomentry, here topo is added because imported geomentry consists of many glitches so topo bring backs the original geomentry.

Step 2 : In order to get fine geomentry go to the mesh > perimeter > length and give 1mm.

Step 3 : Now go to checks manager and check the geomentry and clear all the failing cons or edges automatically.

Step 4 : Now add the criteria values to the geomentry and check the geomentry to defeature any fillets because some fillets will fail for criteria check we will remove those fillets manually by using the cut option.

Step 5 : After the topo check go to mesh and select the spot mesh option for meshing, here we are using the tria elements to mesh in order to get a perfect or good allign meshing we have to use to options 1. Ortho tria for fillets and circular objects 2. Normal tria for flat surfaces. Like this we have to mesh the entire geomentry with tria elements.

Step 6 : After meshing the geomentry we have to check the failed elements or offf elements and remove them with help of reconstruction option. Here we need to fix the kinks and raise edges these are the elements which will come outside of geomentry and it is not shown as failed elements we need to fix this as shown below figure.

Step 7 : Now we completed the 2d Tria mesh and we have to go for volume mesh. In order to volume mesh we need to define geomentry as closed volume. To define we need to create new pid for volume mesh so go to volume mesh > define > select geomenrty and create new pid.

Step 8 : Now we need to mesh the geomentry with the help of tetra fem option and it will mesh whole volume with tetra elements.

Step 9 : After complete volume mesh add collapse criteria and check for the tetra collapse.

Step 10 : After clearing the tetra collapse save the file in your system.

Results :

Thus we have meshed the given geomentry with the tria elements and created the volume mesh and checked the tetra collapse.

This is the link for above model : https://drive.google.com/file/d/1odvKCH9pDaxz-gnk7yxQw4VSnI6RiVxS/view?usp=sharing

Conclusion: In this assignment learnt how to volume mesh for a geomentry and check for tetra collapse.