Mitigation of three-dimensional vibration of inclined sag cable using discrete oil dampers - II. Application

You Lin Xu, Z. Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

64 Citations (Scopus)

Abstract

The hybrid method developed in part I of this paper for three dimensional free and forced vibrations of an inclined sag cable with multi-pairs of oil dampers is now applied to cables in a real cable stayed bridge. Damper performance is evaluated in terms of the achievable maximum modal damping ratio and the possible maximum reduction of resonant response of a cable in both in-plane and out-of-plane vibrations. Effects of both cable properties and damper parameters, such as cable sag, cable inclination, damper stiffness, and damper location, are discussed. Optimum parameters for oil dampers, such as damper damping coefficient and damper direction, are sought within a range of practical interest. The sensitivity study is also carried out to see the influence of small deviation of damper direction on damper performance. Finally, an investigation is performed to see how a proper arrangement of two pairs of oil dampers can overcome insufficient damping ratio problem in the first in-plane mode of a long cable due to frequency avoidance.
Original languageEnglish
Pages (from-to)675-693
Number of pages19
JournalJournal of Sound and Vibration
Volume214
Issue number4
DOIs
Publication statusPublished - 23 Jul 1998

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

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