Performance Analysis of Cables with Attached Tuned-Inerter-Dampers

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Abstract

Cables are structural elements designed to bear tensile forces and experience vibration problems due to their slenderness and low mass. In the field of civil engineering, they are mostly used in bridges where the vibrations are mainly induced by wind, rain, traffic and earthquakes. This paper proposes the use of a tuned-inerter-damper (TID) system, mounted on cables to suppress unwanted vibrations. These are to be attached transversally to the cable, in the vicinity of the support, connected between the deck and the cable. The potential advantage of using a TID system consists in the high apparent mass that can be produced by the inerter. Our analysis showed that the modal damping ratio obtained is much higher than in the case of traditional dampers or tuned mass dampers, leading to an improved overall response. An optimal tuning methodology is also discussed. Numerical results are shown with a cable subjected to both free and forced vibrations and the TID performance is improved when compared with equivalent dampers.
Original languageEnglish
Title of host publicationDynamics of Civil Structures, Volume 2
Subtitle of host publicationProceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015
EditorsJuan Caicedo, Shamim Pakzad
PublisherSpringer
Pages433-441
Number of pages9
ISBN (Electronic)9783319152486
ISBN (Print)9783319152479
DOIs
Publication statusPublished - 14 Jun 2015

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
PublisherSpringer
ISSN (Print)2191-5644

Keywords

  • Cable
  • Tuned inerter damper
  • Vibration suppression
  • Support excitation
  • Viscous damper

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