Derivation of von Kármán plate theory in the framework of three-dimensional viscoelasticity

Manuel Friedrich (FAU Erlangen)

Abstract: We apply a quasistatic nonlinear model for nonsimple viscoelastic materials at a finite-strain setting in the Kelvin’s-Voigt’s rheology to derive a viscoelastic plate model of von Kármán type. We start from solutions to a model of three-dimensional viscoelasticity for 2nd-grade materials where the viscosity stress tensor complies with the principle of time-continuous frame-indifference. Combining the derivation of nonlinear plate theory by Friesecke, James and Müller and the abstract theory of gradient flows in metric spaces we perform a dimension-reduction from 3D to 2D and identify weak solutions of viscoelastic form of von Kármán plates. Based on joint work with Martin Kruzik and Jan Valdman.