The optimal design and seismic performance of a nonlinear tuned mass damper with pinched hysteresis (TMD-PH) are studied. The peculiar behavior of this device is offered by hybrid wire ropes made of shape memory alloy and steel under an axial-flexural loading. This device has been previously described by means of a modified 6-parameter Bouc–Wen hysteresis model. The optimal design of this TMD-PH mounted on a linearly elastic and viscously damped structural system subject to earthquakes is here dealt with by resorting to a stochastic approach. To this end, the nonlinear behavior of the TMD-PH is taken into account via stochastic linearization technique whereas the seismic ground motion is modeled as a filtered amplitude-modulated white Gaussian noise. The optimum design problem aims to minimize the cumulative time integral of the variance of the structural response. After evaluating the accuracy of the stochastic linearization, the present study examines the seismic performance of the TMD-PH optimized for a multi-storey reinforced concrete frame according to the proposed approach.
Optimal Design and Seismic Performance of a Nonlinear {TMD} with Pinched Hysteresis / De Domenico, Dario; Quaranta, Giuseppe; Ricciardi, Giuseppe; Lacarbonara, Walter. - (2021), pp. 207-217. (Intervento presentato al convegno Nodycon2021 tenutosi a Rome) [10.1007/978-3-030-81166-2_19].
Optimal Design and Seismic Performance of a Nonlinear {TMD} with Pinched Hysteresis
Giuseppe Quaranta;Walter Lacarbonara
2021
Abstract
The optimal design and seismic performance of a nonlinear tuned mass damper with pinched hysteresis (TMD-PH) are studied. The peculiar behavior of this device is offered by hybrid wire ropes made of shape memory alloy and steel under an axial-flexural loading. This device has been previously described by means of a modified 6-parameter Bouc–Wen hysteresis model. The optimal design of this TMD-PH mounted on a linearly elastic and viscously damped structural system subject to earthquakes is here dealt with by resorting to a stochastic approach. To this end, the nonlinear behavior of the TMD-PH is taken into account via stochastic linearization technique whereas the seismic ground motion is modeled as a filtered amplitude-modulated white Gaussian noise. The optimum design problem aims to minimize the cumulative time integral of the variance of the structural response. After evaluating the accuracy of the stochastic linearization, the present study examines the seismic performance of the TMD-PH optimized for a multi-storey reinforced concrete frame according to the proposed approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
