ABAQUS assembly of a dental implant

[ACOMBES]

Hello,

I am a student in a French engineering school and I have a project on Abaqus. I should mention that I am a beginner and only started to work on the software for a few months.
I will expose my problem:
I have three models that comes from a scan. The three pieces form a dental implant. There is a screw, the abutment and the crown (see pictures).
The tree models are .inp files. I have made a python script that can rescale each piece so the pieces are at the same scale.

My question is what is the best way to make an assembly of these 3 pieces. The goal is then to simulate the screwing. The 3 pieces don’t fit perfectly as they are scan of real pieces and therefore, they are some defaults (also the mesh which has been reduced in terms of elements to improve calculus time).

Sorry for my English and thank you to anyone that can help.

 

[FEA way]

It would be much easier to operate on CAD geometry instead of orphan mesh.

To position these parts in assembly you can use tools such as translate/rotate instance. Datum geometry (points, axes and planes) can be very helpful in this process. Then you have to define contact. Abaqus offers strain-free adjustmen option that will take care of small gaps and penetrations. You may need to change the default adjustment tolerance.

The mesh looks extremally dense, it should be coarser in less important regions (where there's no contact). Otherwise the simulation may take too long to solve.