Structural control systems, including passive, semi-active and active damping systems, are used to increase structural resilience to multi-hazard excitations. While semi-active and active damping systems have been investigated for the mitigation of multi-hazard excitations, their requirement for real-time controllers and power availability limit their usefulness. This work proposes the use of a newly developed passive variable friction device for the mitigation of multi-hazard events. This passive variable friction device, when installed in a structure, is capable of mitigating different hazards from wind and ground motions. In wind events, the device ensures serviceability, while during earthquake events, the device reduces the building’s inter-story drift to maintain strength-based motion requirements. Results show that the passive variable friction device performs better than a traditional friction damper during a seismic event while not compromising any performance during wind events.
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ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 26–29, 2018
Quebec City, Quebec, Canada
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5175-3
PROCEEDINGS PAPER
Passive Variable Friction Damper for Increased Structural Resilience to Multi-Hazard Excitations
Austin Downey,
Austin Downey
Iowa State University, Ames, IA
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MohammadKazem Sadoughi,
MohammadKazem Sadoughi
Iowa State University, Ames, IA
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Simon Laflamme,
Simon Laflamme
Iowa State University, Ames, IA
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Chao Hu
Chao Hu
Iowa State University, Ames, IA
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Austin Downey
Iowa State University, Ames, IA
MohammadKazem Sadoughi
Iowa State University, Ames, IA
Liang Cao
Lehigh University, Bethlehem, PA
Simon Laflamme
Iowa State University, Ames, IA
Chao Hu
Iowa State University, Ames, IA
Paper No:
DETC2018-85207, V02AT03A051; 9 pages
Published Online:
November 2, 2018
Citation
Downey, A, Sadoughi, M, Cao, L, Laflamme, S, & Hu, C. "Passive Variable Friction Damper for Increased Structural Resilience to Multi-Hazard Excitations." Proceedings of the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 2A: 44th Design Automation Conference. Quebec City, Quebec, Canada. August 26–29, 2018. V02AT03A051. ASME. https://doi.org/10.1115/DETC2018-85207
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