Analytical solution methods for non-adhesive contact problem can be classified into two types based on the geometry of the area of contact. A conforming contact is one in which the two bodies touch at multiple points before any deformation takes place (i.e., they just "fit together").
Analytical methods for non-adhesive contact issues can be grouped into two classes depending on the area of contact. A conforming contact is one where the two bodies touch at several points before any deformation happens (simply "align").