Seismic response of self-centring hysteretic SDOF systems

Abstract

The seismic response of single-degree-of-freedom (SDOF) systems incorporating flag-shaped hysteretic structural behaviour, with self-centring capability, is investigated numerically. For a SDOF system with a given initial period and strength level, the flag-shaped hysteretic behaviour is fully defined by a post-yielding stiffness parameter and an energy-dissipation parameter. A comprehensive parametric study was conducted to determine the influence of these parameters on SDOF structural response, in terms of displacement ductility, absolute acceleration and absorbed energy. This parametric study was conducted using an ensemble of 20 historical earthquake records corresponding to ordinary gro..