Conforming mesh between 2 biological structures

Hi, I previously had a very structured hexahedral mesh of the knee (see image). Now I want to make the mesh conforming between a few of these structures (for example the ligament and the bone or cartilage and bone). Ideally I would not like to change the mesh structure of the ligament or cartilage, but the structure of the bone can change. When loading this into cubit, I cannot use the imprint and merge functions as it is a mesh-based geometry (also not after deleting the meshes).

So I tried to proceed by loading the .step files of my structures. First of all, I am then unable to get the very well structured mesh back. I have tried to use sculpt for a bit, but I’m still very new to this software, so I am not achieving any similar results to so far. Secondly, when trying to imprint and merge 2 volumes (see second picture), it is not working. I get some warnings of 'attempting to merge 2 entities with same parent and then it consolidated 0 pair of curves or vertices. I am not sure how I should prevent these warnings or how I can imprint and merge properly. Like I said, I am still very new to this software, so any help and suggestions is very much appreciated.

So I have either one of the following questions.

  • How could I make these meshes conforming within the mesh-based geometry?
  • How should can I achieve this very well structured mesh within sculpt or any other meshing possibility in cubit?
  • How can I properly imprint and merge these volumes?

Hi @renate.janssen,
are you able to share the geometry so that i can take a look?

Hi, yes sure, here you have the step files of the femur and femur cartilage

femur_cartilage.step (862.2 KB)
femur.step (94.8 KB)