On the liniarization of experimental hysteretic loops

Abstract

In this paper is presented a linearization method developed on the basis of the experimental hysteresis loop, by considering the most general case, when there is no mathematical model associated with the hysteretic behavior. The parameters of linear model are determined for a predicted dominant frequency component in the response spectrum of the mechanical structure equipped by the studied hysteretic device. The performances of proposed method are illustrated on the basis of an experimental loop corresponding to a seismic protection device which is used in base isolation of buildings.