NEHRP Clearinghouse
- Title
- Development and Experimental Study of Semi-Active Fluid Damping Devices for Seismic Protection of Structures.
- File
- PB96136940.pdf
- Author(s)
- Symans, M. D.; Constantinou, M. C.
- Source
- National Science Foundation, Arlington, VA.; New York State Science and Technology Foundation, Albany., August 3, 1995, 532 p.
- Identifying Number(s)
- NCEER-95-0011
- Abstract
- This report describes the development and testing of semi-active fluid damping devices for the control of structures subjected to seismic excitation. The semi-active dampers operate on the principle of fluid orificing and have mechanical properties which are controllable through modulation of fluid flow within the device. The experimental testing and analytical modeling of two different semi-active fluid damping devices is described. Furthermore, shaking table tests have been performed on a one-story and three-story model structure both with and without the semi-active damping system. The effectiveness of various control algorithms and time delay compensation methods is discussed. Analytical predictions of the shaking table test results are presented and shown to compare reasonably well with the experiments.
- Keywords
- Fluid damping devices; Dampers; Structural vibration; Earthquake resistance; Seismic waves; Fluid-structure interactions; Structural properties; Fluid flow; Mechanical properties; Vibration damping; Semi-active control; Vibration isolators; Shaking table tests; Control algorithms; Seismic isolation; Vibration control