Challenge

Week 8-3D Tetra Meshing Challenge

Objective:-

to make a 2d tria mesh for the given modal in the first part
eliminate all the size failing elements
then do a 3d tetra mesh with the given quality parameters
then check for the tet collapse and fix them
to do a quick tetra mesh for the given components in part 2 and part 3 of the challenge

Introduction:-

we were given 3 different modal to do 3d meshing with different methods
- by creating the 2d elements first then doing a 3d mesh on it
- by directly creating a volume tetra nesh or quick tetra mesh

Theory:-

for the first modal given in the challenge we were asked to do a 2d to 3d mesh
so for that, we first created the 2d mesh on the surface after deleting the solids and
then we did the quality check for the 2d tetra elements (maximum and minimum size)
then after fixing all the failing elements we moved to the 3d mesh
so for creating a 3d tetra mesh over the 2d tria mesh
we went to "3d" then to tetra mesh then there we selected the elements
and clicked on create

zero failing elements after doing the 2d tria mesh

After fixing all the elements failing for tet collapse

for the second part of the challenge, we first import the geometry
then we deleted all the solids present there
then we went to "view" then "browser" then "hypermesh"
then we selected "quick tetra mesh"
there we selected the component
then we inserted the parameters such as element size as 3 and tet collapse as 1.5
then we clicked on create
after getting the 3d tetra mesh many elements were failing for the tet collapse
so for that, we saved those elements there
and then in the mask option, we selected "elements" then "retrieve" then we masked the failing elements
then we reversed the masked elements in this way we got all the failing elements
then we went to 3d then tetra mesh parameters and then there we inserted the data such as fill voids, fix mid nodes, smoothing
and then we remeshed those failing elements with their adjacent elements

quick tetra option

after fixing all the elements failing for tet collapse zero elements failing for tet collapse

3rd modal of the challenge with zero failing elements

conclusions:-

Ship work like this
in your own course.