Simulation with Cylinder Pin Contact

[busycleta]

Hi Community

I am currently trying to advance my FEA of a Plastic/Metal Part combination. I want to study the pressure distribution around a metal Pin that contacts a plastic socket. Now as always I start of easy and use bonded as first approx. to check model support for overconstrained behavior. ✔ this is shown in load case "bonded definition"

Now I'd Like to study the situation in the pin/hole contact surface with a more realistic separation contact.

Unfortunately the error messages appearing here are unspecific and no geometric representation of the failure area is available.


Does anyone have a recommendation to "tune" the contact parameters

• mesh size
• stiffness
• max penetration or other important
  
  in order to make the solution run. Since I am still expecting small deformation, I did not yet try with large deflection non linear analysis type
  
  looking forward to a few tips, also I did not find how to allow more iterations before finding a convergence in the solver.
  [ also I am willing to share the file, but don't know how to clean it, its huge with the simulation results in it ]
  
  
  

   

[karol.suchon]

Hello, 

to be honest the difference between bonded and separation contact here will be rather small. 

We do not expect a huge movement pin inside the hole. But it could slide a little inside. So the full separation contact could be too complicated if we expect the movement only in one direction. So I will try with separation contact on the end face of the cylinder and sliding with the cylindrical one.

If that does not help. Attach the simulation file. You could use the link or standard export to f3d 🙂

BR

Karol