| Title | Viscous Dampers: Testing, Modeling, and Application in Vibration and Seismic Isolation |
| Authors | Makris, N.; Constantinou, M.C. |
| Publication | National Center for Earthquake Engineering Research Report, NCEER-90-0028, Dec 20 1990. |
| Objectives | To calibrate a fractional derivative Maxwell model, proposed for viscous dampers. |
| Abstract | A fractional derivative Maxwell model is proposed for viscous dampers which are used for vibration isolation of piping systems, forging hammers and other industrial equipment, as well as vibration and seismic isolation of building structures. The development and calibration of the model is based on experimentally observed dynamic characteristics. The proposed model is validated by dyamic testing and a good agreement between predicted and experimental results is obtained. Some analytical results for a single-degree- of-freedom viscodamper system are presented. These results are useful to the design of vibration isolation systems. Futhermore, an equivalent viscous oscillator is defined whose response is essentially the same as that of the viscodamper isolator. Finally, the model is employed in the analysis of a base-isolated model structure which has been tested on a shake table. |
