The frame with energy concentration is the frame in which the inelastic energy absorption is limited to the specified stories of the frame, the other parts of the frame remaining elastic. It has been already made clear that the seismic response of the frame with energy concentration in the first story can be easily predicted in the case that the energy absorbing stories consist of the flexible elements and the stiff ones. In this paper, a general method for the prediction of seismic response of the flexible-stiff mixed frame with energy concentration in arbitrary stories is derived.
