Article
Version 1
Preserved in Portico This version is not peer-reviewed
The Role of a Simple Inerter in Seismic Base Isolation
Version 1
: Received: 14 December 2023 / Approved: 15 December 2023 / Online: 15 December 2023 (04:27:46 CET)
A peer-reviewed article of this Preprint also exists.
Jangid, R.S. The Role of a Simple Inerter in Seismic Base Isolation. Appl. Sci. 2024, 14, 1056. Jangid, R.S. The Role of a Simple Inerter in Seismic Base Isolation. Appl. Sci. 2024, 14, 1056.
Abstract
The present study investigates the role of a simple inerter in supplemental devices for possible implementation in the matured seismic base isolation technique. Firstly, the response of the base-isolated structure with an optimally tuned mass damper-inerter (TMDI) is investigated to see the tuning effects. The time required to tune the TMDI was found to be significantly longer than the duration of a strong-motion earthquake. There was still a reduction in the response of the isolated structure, which is primarily due to the added damping and stiffness (ADAS) of TMDI and not because of the tuning effects. Hence, it is proposed that the corresponding ADAS of the TMDI be directly added to the isolation device. Secondly, the response of the base-isolated structures with the fluid inerter damper (FID) is studied. It was observed that the inerter of the FID does not influence the displacement variance of an isolated structure under broadband earthquake excitation. It implies that the response of the isolated structure with FID is primarily controlled by its counterpart fluid damper (FD). The performance of optimal TMDI, ADAS, FID, and FD to mitigate the seismic response of the flexible multi-story base-isolated structure under real earthquake excitations is also investigated. In terms of suppressing the displacement and acceleration responses of the isolated structure, it has been found that TMDI and ADAS perform similarly. Comparing the response of the isolated structure with FID and FD demonstrated that the inerter in the FID has detrimental effects on the isolated structures, in which the top floor's acceleration and base shear are substantially increased.
Keywords
floor accelerations; fluid inerter damper; real earthquake; seismic base isolation; stationary excitation; tuned mass damper-inerter
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
