If you set up a contact analysis then contact pressure would probably be what you are looking for.
When you make your contacts Mechanica automatically creates force and area measures for each contact. The results for these measures can be seen in your run status summary (*.rpt file).
To see a fringe plot of the contact pressures go to your results window and choose "contact pressure" instead of stress or displacement. That will graphically show you only the contact surfaces and the contact pressure on each.
