Date of Award
Civil and Environmental Engineering
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An experimental study and a finite element analysis is conducted on a cable-damper system to study the individual and combined effects of damper stiffness and damper support stiffness on controlling stay cable vibrations. For the studied ranges of damper stiffness and damper support stiffness, the optimum damper coefficient is found to be shifted up to 22% and the modal damping ratio varies by as much as 23%. Results show that the optimum damper size increases as the damper stiffness and the damper support stiffness increase. Though the corresponding maximum attainable modal damping ratio also increases with more rigid damper support stiffness, it was found to be lower if damper stiffness increases. Approximate relations between the optimum damper size and the damper location, damper stiffness, damper support stiffness, as well as the corresponding maximum attainable modal damping ratio with these three system parameters are proposed.
Fournier, Jennifer Anne, "Experimental study on the support stiffness effect on the performance of an external linear viscous damper" (2012). Electronic Theses and Dissertations. 7928.