= Normal contact stiffness
{wiki=Normal_contact_stiffness}
Normal contact stiffness is a concept used in contact mechanics, which deals with the interactions that occur when two bodies come into contact. Specifically, normal contact stiffness quantifies how much a material resists deformation in the direction perpendicular to the contact surface when a normal load is applied. In simple terms, it describes the relationship between the force applied perpendicular to the contact surface and the resulting deformation (deflection) of the contact area.
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