ABSTRACT
In the paper a brief overview of research results on the seismic energy demand and supply of SDOF systems, obtained in recent years at the University of Ljubljana, is presented. The first part of the paper deals with energy demand. The results of parametric studies on input energy, on the hysteretic to input energy ratio, and on the relation between hysteretic energy and maximum displacement are presented, and simple formulae, which can be used in design, are proposed. Energy dissipation capacity (supply) is defined in terms of equivalent ductility factors, which represent reduced values of ductility factors based on maximum displacement under monotonic loading.
