Rigid bodies are modeled only in shells in Abaqus. You must first select Discrete Rigid Type and then create the shape you want and for applying force or boundary conditions and set RP for it.

Dear Khalef,

You need to consider your model as a shell otherwise it may not work. A reference point assignment is required on the discrete rigid body for application of the boundary condition definition.

Best regards

Behzad

Thank you alot Shahrokh Savoli Farshad Abbasi Behzad v. Farahani for answering.

I already did the assembly.

Now i have another problem is to define the nature of contact between 3 parts of my model. 1: it is a dental implant 2: it is the cancellous bone 3: it is the compact bone I would like to merge the 2 part and 3 part in one piece. and to create a solid contact between 1 part and the 2 part (to refer to an osseointegrated implant). I hope someone can help me on that. I am a beginner on abaqus ... detailed answers, tutorial, or documents that will help me please ....contributors can be stated in my acknowledgement part of my scientific paper.

Great!

I recommend you to read the following report regarding the contact mechanic basis and formulations

Technical Report A 3D Analysis of the Node to Node and Node to Surface Contac...

Then, you will realize the contact type and you can define it in your interaction module in Abaqus

BR