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Performance of TMDI for Tall Building Damping

  • 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.

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Metadaten
Author:Felix WeberORCiD, Peter Huber, Fredrik Borchsenius, Christian Braun
DOI:https://doi.org/10.3390/act9040139
Parent Title (English):Actuators
Publisher:MPDI
Document Type:Article
Language:English
Year of Completion:2020
Year of first Publication:2020
Release Date:2022/01/17
Tag:TMD; TMDI; damping; inerter; simulation; tall building; wind excitation
Volume:9
Issue:4
Article Number:139
First Page:1
Last Page:13
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
OpenAccess Publikationsweg:Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium
research focus:Produktion und Systeme
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International