It is the lattice part - the lattice mesh is not really done never used lattices so not sure - things inside there are not really connected as it is.
(try an element size that is close to the diameter of the lattice say 0.25 mm)
For more help:
https://www.padtinc.com/blog/the-focus/how-to-use-lattice-optimization-in-ansys-mechanical-and-ansys-spaceclaim-19-2
Please Login to Report Topic
Please Login to Share Feed