The vibration damping capability of a hysteretic tuned mass damper (TMD) is investigated. Two optimization strategies, based on stationary and non-stationary excitations, are proposed. In the first instance, the base excitation is a harmonic acceleration and the cost function is the area subtended by the frequency response curves at selected amplitudes. In the second instance, the motion of the main mass caused by earthquake excitations is sought to be reduced for an ensemble of earthquakes. In both approaches the optimal parameters of the vibration absorber are obtained by employing a metaheuristic algorithm. Both methods provide optimal TMDs able to achieve significant reductions in structural displacement and acceleration.
Optimization strategies of hysteretic tuned mass dampers for seismic control / Boccamazzo, A; Carboni, B; Quaranta, G; Lacarbonara, W. - II:(2020), pp. 99-106. (Intervento presentato al convegno First International Nonlinear Dynamics Conference, NODYCON 2019 tenutosi a Rome) [10.1007/978-3-030-34747-5_10].
Optimization strategies of hysteretic tuned mass dampers for seismic control
Carboni, B;Quaranta, G;Lacarbonara, W
2020
Abstract
The vibration damping capability of a hysteretic tuned mass damper (TMD) is investigated. Two optimization strategies, based on stationary and non-stationary excitations, are proposed. In the first instance, the base excitation is a harmonic acceleration and the cost function is the area subtended by the frequency response curves at selected amplitudes. In the second instance, the motion of the main mass caused by earthquake excitations is sought to be reduced for an ensemble of earthquakes. In both approaches the optimal parameters of the vibration absorber are obtained by employing a metaheuristic algorithm. Both methods provide optimal TMDs able to achieve significant reductions in structural displacement and acceleration.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
