Unwanted Initial Penetration in touching solids

[SaeidII]

Hello,
I am having huge unwanted stresses in two solid that are only touching each other. The stresses exist from second time step afterward.
With enabling ignore initial penetration(DYCONIGNORE), I was not expecting this behaviour.
I have already checked the model and there is no penetration, and meshing shape is not in a way to cause any penetration.
I also tried enabling "stress free init cont" in contact table for specific contacting solids, But this didn't change any thing either.
I am considering making a small gap between solids as a last resort. Does any body have any clues why is this happening and how can I workaround this?

 

[SaeidII]

I finally figured it out,
The touching solids had different mesh types and probably that was the cause of wrong results.