I'm trying to run a simulation on an assembly using global contact with no penetration. Everything goes fine until the simulation stops and give this message "Automatic global contact search". I don't know what this means. I'm building some snap fits so I can't work with "bonded" option (wich BTW works fine).

How can I run the simulation with contacts with no penetration? There are a lot of this snap fits so I would like it to be automatic (there are no gaps between the entities)