TY - GEN A1 - Klapproth, Corinna A1 - Deuflhard, Peter A1 - Schiela, Anton T1 - A Perturbation Result for Dynamical Contact Problems N2 - This paper is intended to be a first step towards the continuous dependence of dynamical contact problems on the initial data as well as the uniqueness of a solution. Moreover, it provides the basis for a proof of the convergence of popular time integration schemes as the Newmark method. We study a frictionless dynamical contact problem between both linearly elastic and viscoelastic bodies which is formulated via the Signorini contact conditions. For viscoelastic materials fulfilling the Kelvin-Voigt constitutive law, we find a characterization of the class of problems which satisfy a perturbation result in a non-trivial mix of norms in function space. This characterization is given in the form of a stability condition on the contact stresses at the contact boundaries. Furthermore, we present perturbation results for two well-established approximations of the classical Signorini condition: The Signorini condition formulated in velocities and the model of normal compliance, both satisfying even a sharper version of our stability condition. T3 - ZIB-Report - 08-27 KW - Dynamical contact problems KW - stability KW - (visco-)elasticity KW - Signorini condition KW - Newmark method Y1 - 2008 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/1079 UR - https://nbn-resolving.org/urn:nbn:de:0297-zib-10793 SN - 1438-0064 ER -