Influence of the form of axisymmetric load on the stress-strain state of an elastoplastic half-space

Abstract

The problems of elastic sinking of materials and elastic restoration of an imprint under loading of an elastic-plastic half-space with an axisymmetric load of the form,P(r)=P0(1-r2/a2)β where 0<β<0.5 are considered. Expressions are obtained that describing the stress-strain state of an elastoplastic half-space. The conditions of the onset of plastic deformation in the near-surface layer and on the half-space of surface are considered depending on the parameter β.

Contact Mechanics of Rough Surfaces in Hermetic Sealing Studies

“…Similarly, we define the criterion of occurrence of plastic deformation at the contact area. According to [23], the equivalent stresses at the center of the area are…”