A new formula of impact stiffness in linear viscoelastic model for pounding simulation

Abstract

The phenomenon of earthquake-induced structural pounding was extensively studied by some researchers using diferent models for the impact force. The aim of this paper is to provide a new formula of impact stifness in the linear viscoelastic contact model, based on the assumption that the maximum impact deformation from the distributed mass model should be equal to that from the equivalent lumped mass model. The correctness and accuracy of the proposed formula have been confrmed by comparing the pounding simulation using the present formula of impact stifness with those using the existing formulae.