Ansys re-establish contact issue

[Shelby86]

Hi All,

I am a little stuck and require some guidance. Let me set the scene. I have two 2D structural axisymmetric analysis with 2 parts (one fixed (Part A) and the other held down via a spring (Part B)) which are in contact (frictionless), and I am modelling a cyclic loading to allow one of the parts to disconnect and then reconnect every cycle.

Here is the issue. After the first cycle Part B breaks contact and comes apart (good), however when the second cycle begins i.e. Part B is meant to go back to its original contact position, part B goes through part A as if it has not recognised part A is there. I need part B to establish the contact.

Bit of an odd, one. Can anyone shed some light on this?

Much Obliged

Shelby

 

[Shelby86]

All,

It's ok I have managed to work out the issue.

It turns out that the spring was being deflected to much and as a consequence the velocity that part B was moving at was too high, hence why ANSYS could not converge. Therefore slow movements allow better convergence.

Shelby