000004835 001__ 4835
000004835 005__ 20141119144557.0
000004835 04107 $$aeng
000004835 046__ $$k2002-06-02
000004835 100__ $$aMain, Joseph
000004835 24500 $$aANALYTICAL INVESTIGATION OF THE PERFORMANCE OF A DAMPER WITH A FRICTION THRESHOLD FOR STAY-CABLE VIBRATION SUPPRESSION

000004835 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004835 260__ $$bColumbia University in the City of New York
000004835 506__ $$arestricted
000004835 520__ $$2eng$$aBecause of the problematic large-amplitude vibrations that have been observed on the cables of the Fred Hartman cable-stayed bridge in Houston, Texas, a vibration suppression system is being designed, which will supplement the current cross-tie restraining system with fluid dampers, to be attached to the cables transversely near the anchorages. In the preparation of the damper design, inquiry revealed that fluid dampers typically may have a significant inherent friction threshold even when specified to have a linear force-velocity relationship. When the forces in the damper are below this friction threshold, the damper is completely locked, and no energy is dissipated. Motivated by the potentially large magnitude of the damper friction threshold and the apparent significance of its effect in the measured data, this paper presents an analytical investigation of the influence of a friction threshold on damper performance and summarizes a proposed design procedure that accounts for the friction threshold. This procedure determines the maximum allowable friction threshold, the viscous damper coefficient, and the power dissipation and maximum force capacities. 

000004835 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004835 653__ $$astay-cable, damping, friction

000004835 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004835 720__ $$aMain, Joseph$$iJones, Nicholas
000004835 8560_ $$ffischerc@itam.cas.cz
000004835 8564_ $$s168820$$uhttp://invenio.itam.cas.cz/record/4835/files/413.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004835 962__ $$r4594
000004835 980__ $$aPAPER