Semi-active friction damper for buildings subject to seismic excitation

Juan S. Mantilla; Alexander Solarte; Daniel Gomez; Johannio Marulanda Jr.; Peter Thomson

doi:10.1117/12.2222115

15 April 2016 Semi-active friction damper for buildings subject to seismic excitation

Juan S. Mantilla, Alexander Solarte, Daniel Gomez, Johannio Marulanda Jr., Peter Thomson

Proceedings Volume 9799, Active and Passive Smart Structures and Integrated Systems 2016; 97991H (2016) https://doi.org/10.1117/12.2222115
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Structural control systems are considered an effective alternative for reducing vibrations in civil structures and are classified according to their energy supply requirement: passive, semi-active, active and hybrid. Commonly used structural control systems in buildings are passive friction dampers, which add energy dissipation through damping mechanisms induced by sliding friction between their surfaces. Semi-Active Variable Friction Dampers (SAVFD) allow the optimum efficiency range of friction dampers to be enhanced by controlling the clamping force in real time. This paper describes the development and performance evaluation of a low-cost SAVFD for the reduction of vibrations of structures subject to earthquakes. The SAVFD and a benchmark structural control test structure were experimentally characterized and analytical models were developed and updated based on the dynamic characterization. Decentralized control algorithms were implemented and tested on a shaking table. Relative displacements and accelerations of the structure controlled with the SAVFD were 80% less than those of the uncontrolled structure

Citation Download Citation

Juan S. Mantilla, Alexander Solarte, Daniel Gomez, Johannio Marulanda Jr., and Peter Thomson "Semi-active friction damper for buildings subject to seismic excitation", Proc. SPIE 9799, Active and Passive Smart Structures and Integrated Systems 2016, 97991H (15 April 2016); https://doi.org/10.1117/12.2222115

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