prioritized slip load optimization of friction damped-based structures

Considering the main concern of friction dampers that allows the building to move elastically, it is crucial to maximize the energy absorption of the frame configuration. so, finding the optimum slip load in which the energy of earthquake could be dissipated effectively has a critical aspect. the novelty of this article is presenting an approach in order to control the total acceleration as well as top acceleration and displacement of structures. to this aim, two optimization problems have been presented which yield the optimum slip load regarding the priority level between minimum top acceleration, top displacement and total acceleration. both problems are solved using sga algorithm. the results show that using non-uniform slip loads in each floor, total acceleration of structure would be controlled effectively while in uniform case, controlling top displacement and acceleration have a major priority in structure’s seismic retrofit.