Ricerc@Sapienza

In the HARVEST-WIND project, optimally designed tuned mass-damper-inerters (TMDIs) will be considered to meet code-prescribed serviceability criteria in typical wind-excited tall buildings subject to vortex shedding effects in a performance-based design context. The TMDI, couples the classical tuned-mass-damper (TMD) with an inerter, a two-terminal device resisting the relative acceleration of its terminals, achieving mass-amplification and higher-modes-damping effects compared to the TMD. Energy Harvesting (EH) potential of this new system will be also investigated by adding in parallel to the inerter an electromagnetic motor, obtaining a device (named EH-TMDI) for simultaneous EH and vibration suppression in wind-excited tall buildings.
A benchmark 74-storey building will be considered, where TMDI is added to the structural system assuming ideal linear inerter behaviour and computationally efficient frequency domain will be adopted in structural analyses. The TMDI is optimally designed for stiffness, damping, and inerter constant parameters via a standard numerical optimization search, for a range of pre-specified attached TMDI mass values. The goal is to shown that the TMDI can achieve more lightweight construction in the design of new code-compliant tall buildings against wind and that significant EH skills are available by the varying inertance capabilities of the system.