Performance of TMDI for Tall Building Damping

Abstract

This study investigates the vibration reduction of tall wind-excited buildings using a tuned mass damper (TMD) with an inerter (TMDI). The performance of the TMDI is computed as a function of the floor to which the inerter is grounded as this parameter strongly influences the vibration reduction of the building and for the case when the inerter is grounded to the earth whereby the absolute acceleration of the corresponding inerter terminal is zero. Simulations are made for broadband and harmonic excitations of the first three bending modes, and the conventional TMD is used as a benchmark. It is found that the inerter performs best when grounded to the earth because, then, the inerter force is in proportion to the absolute acceleration of only the pendulum mass, but not to the relative acceleration of the two inerter terminals, which is demonstrated by the mass matrix. However, if the inerter is grounded to a floor below the pendulum mass, the TMDI only outperforms the TMD if the inerter is grounded to a floor within approximately the first third of the building’s height. For the most realistic case, where the inerter is grounded to a floor in the vicinity of the pendulum mass, the TMDI performs far worse than the classical TMD.

Passive, semi-active, active and hybrid mass dampers: A literature review with associated applications on building-like structures

“…More specifically, the SATMD equipped with a displacement-based GH controller had the best performance by reducing the fore-aft and side-to-side damage equivalent loads by around 12% and 64% respectively. Weber et al (2020) investigated the performance of a tuned mass damper equipped with an inerter (TMDI). The authors mentioned that the floor on which the inerter is grounded is directly related to the performance of the TMDI.…”

Wave-induced vibration control of Floating production storage and offloading systems by tuned mass damper inerter

“…Again, as discussed above, the mass of the liquid cargo of the FPSO is variable and hence cannot always be relied on to provide a large inertia. This issue can be resolved by the use of a tuned mass damper inerter (TMDI), in which the TMD is connected to the primary structure and a two-terminal inerter device, one of which is attached to the TMD mass and the other is either grounded or attached to the primary structure (Weber et al, 2020).…”

Vibration Suppression of Bolter Miner Employing Dynamic Vibration Absorber

“…Several types of DVA have been developed to meet various needs (in some felds, DVA is also called tuned mass damper (TMD)): TMDinerter (TMDI) compounding the conventional TMD with an inerter device. Te inerter in the introduced TMDI confguration provides a "mass amplifcation efect" [10]. Particle dampers are robust and reliable and can be used to dampen vibrations in lightly damped structures, especially in harsh environments [11].…”