<p>The study of dynamic effects in structural systems has been extensively explored due to increasing societal safety concerns. In the scientific and technological sphere, investigations are being conducted to contribute to structural vibration control, aiming to prevent catastrophic damage caused by dynamic loads. In this context, the primary objective of this work is to evaluate the vibratory behavior of a two-degree-of-freedom metal structure, using a passive control system based on friction damping techniques. The dissipative mechanism consists of actuator elements that induce mechanical friction, responsible for increasing structural damping. Initially, modal analysis and forced vibration analysis of the physical system were conducted using analytical and numerical methodologies for structural dynamics, with the results from these approaches subsequently compared. In this comparative analysis, the most significant relative error was less than 5%, ensuring good coherence between the methods employed. Experimentally, tests were conducted to characterize the dynamic response of the friction damping device, with intrinsic parameters predefined to calculate the energy dissipated per load cycle. It was found that dissipated energy increased with the increment of displacement established in the dynamic test. Subsequently, structural responses under forced vibration and seismic excitation were analyzed, considering different test configurations, allowing the observation of the dynamic model's behavior with and without the dissipative mechanism. Notably, forced vibration tests revealed that the passive control system exhibited better efficiency at the second natural frequency of the structure. Given that the friction moment acting on the friction damping device varies with the applied normal load, the maximum percentage reductions in peak acceleration were approximately 82% on the first floor and 74% on the second floor.</p>