An experimental study on the robustness of a tuned viscous mass damper system incorporated into a single-degree-of-freedom structure

Kohju Ikago, Shun Taniguchi, Masahiro Ikenaga, Shigeki Nakaminami, Norio Inoue, Kenji Saito

研究成果: Conference contribution

抄録

A tuned viscous mass damper (TVMD) is a tuned mass damper (TMD)–like system that uses an inerter as its mass element. Because a TVMD performs best when it is optimally tuned to the primary system, variation of system properties, such as spring element stiffness and viscous element damping coefficient, from the optimal values may compromise performance. In this research study, a real-time hybrid simulation (RTHS) environment was built to examine the robustness of a TVMD system incorporated into a single-degree-of-freedom (SDOF) structure with respect to variations in the supporting spring stiffness and damping coefficient. In the RTHS testing, a full-scale rotary inertial damper having an apparent mass of 2500 metric tons connected in series with a spring element made of rubber was used as the physical substructure, whereas the primary SDOF structure was modeled as a numerical substructure. Furthermore, a numerical spring element was incorporated in series between the numerical primary structure and the physical rubber element to represent the variation in supporting spring stiffness. Because the silicone oil used in the rotary inerter-damper as a damping material was non–Newtonian fluid, the damping coefficient decreased as damper velocity increased. Thus, the system robustness with respect to damping coefficient can also be examined by varying damper velocity from the design velocity at which the TVMD is optimally designed. Experimental results show that the TVMD system remains effective and, thus, is robust when the system is detuned when the supporting spring stiffness is higher and the damping coefficient is lower than the optimal values facilitating the motion in the damping part, thereby ensuring effective energy dissipation.

本文言語English
ホスト出版物のタイトルProceedings of the 7th International Conference on Advances in Experimental Structural Engineering, AESE 2017
編集者Marco Furinghetti, Davide Bolognini, Alberto Pavese
出版社EUCENTRE
ページ473-484
ページ数12
ISBN(電子版)9788885701021
DOI
出版ステータスPublished - 2017
イベント7th International Conference on Advances in Experimental Structural Engineering, AESE 2017 - Pavia, Italy
継続期間: 2017 9 62017 9 8

出版物シリーズ

名前International Conference on Advances in Experimental Structural Engineering
2017-September
ISSN(電子版)2522-2503

Other

Other7th International Conference on Advances in Experimental Structural Engineering, AESE 2017
国/地域Italy
CityPavia
Period17/9/617/9/8

ASJC Scopus subject areas

  • 土木構造工学
  • 建築および建設

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