In complex mechanic and mechatronic structures different types of contact interfaces can be identified.
First are contact interfaces where the contact stresses in surface normal direction are the dominating quantity. This is e.g. the case in many areas of spot welded structures. In MAMBA these contact interfaces are denoted as “Normal Contact”.
Second are contact interfaces where also shear stresses due to friction are occurring. This is e.g. the case for areas where the external loading would lead to tangential relative movement within the contact interface. In MAMBA these contact interfaces are denoted as “Frictional Contact” and comprise the “Normal Contact” as well.
Third are contact interfaces where high contact pressures values occur due to e.g. pretension of the structure. This is the case for bolted connections which are thoroughly tightened. In MAMBA these contact interfaces are denoted as “Pretensioned Contact” and comprise the “Frictional Contact” as well.