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Modeling and Validation of the Resettable Semi-Passive Stiffness Damper

Sallar, Grace A.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1417079222

Abstract Details

2014, Master of Science (MS), Ohio University, Civil Engineering (Engineering and Technology).
Earthquakes have been a major cause of destruction over the years. Numerous efforts have been made to mitigate the seismic response of structures through various means including the passive, active, semi-active and hybrid systems. The semi-active control system has the advantage that it is adaptive, generates passive (resistive) forces, requires low power for operation and is reliable when compared to other control systems (i.e. passive, active, etc.). The Resettable Semi-Active Stiffness Damper (RSASD) has been shown to be superior to other control systems at vibration suppression in the presence of near-field earthquakes. It is made up of a cylinder, a double-acting piston, and a valve connecting both sides of the cylinder. In spite of its many advantages, the RSASD has a disadvantage in the sense that it requires a multi-feedback control system to function. The Resettable Semi-Passive Stiffness Device (RSPSD) has a similar configuration to the RSASD but with reduced feedback components, thereby making the resetting system more reliable, while producing a similar performance. The main purpose of this research is to experimentally validate the resetting mechanism of the RSPSD and compare the performance with that of the RSASD. A scaled prototype of the RSPSD was built and data was collected in a laboratory setting. Using the Matlab programming language tool Simulink for numerical simulations, a model of the RSPSD was developed and simulations were conducted. Results of the
Kenneth Walsh, Ph.D (Advisor)
Eric Steinberg, Ph.D (Committee Member)
Greg Springer, Ph.D (Committee Member)
Shad Sargand, Ph.D (Committee Member)
177 p.
Civil Engineering
resettable; semi-active; semi-passive; passive; RSASD; RSPSD; structural control; seismic mitigation, semi-active; control device

Recommended Citations

Citations

  • Sallar, G. A. (2014). Modeling and Validation of the Resettable Semi-Passive Stiffness Damper [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1417079222

    APA Style (7th edition)

  • Sallar, Grace. Modeling and Validation of the Resettable Semi-Passive Stiffness Damper. 2014. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1417079222.

    MLA Style (8th edition)

  • Sallar, Grace. "Modeling and Validation of the Resettable Semi-Passive Stiffness Damper." Master's thesis, Ohio University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1417079222

    Chicago Manual of Style (17th edition)

ohiou1417079222
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© 2014, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.