M. Rochdi et M. Sofonea, ON FRICTIONLESS CONTACT BETWEEN 2 ELASTIC-VISCOPLASTIC BODIES, Quarterly Journal of Mechanics and Applied Mathematics, 50, 1997, pp. 481-496
A quasistatic contact problem between two elastic-viscoplastic bodies
involving frictionless boundary conditions is considered. Two variatio
nal formulations of this problem are proposed, followed by existence a
nd uniqueness results. An equivalence result between the previous vari
ational formulations, the continuous dependence of the solution with r
espect to the data as well as a convergence result with respect to a v
iscosity parameter are also obtained.