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Simulations of a Variable Friction Device for Multihazard Mitigation
Journal of Structural Engineering
  • Liang Cao, Iowa State University
  • Simon Laflamme, Iowa State University
  • Douglas Taylor, Taylor Devices
  • James Ricles, Lehigh University
Document Type
Publication Version
Accepted Manuscript
Publication Date
This paper investigates the performance of a novel semiactive damping device at mitigating nonsimultaneous multihazard loads. The device, termed modified friction device (MFD), has been previously proposed by the authors. It consists of a variable friction system based on automotive drum brake technology. The device has been demonstrated in a laboratory environment, and its dynamic behavior has been modeled. This model is used to conduct numerical simulations on two representative structures, one short building located in Japan and the other tall building located in Boston, MA. Simulated hazards include wind, blast, and seismic loads. Various control cases are considered, including semiactive control under five different sets of control weights, and passive viscous and passive friction to benchmark performance. Results show that the semiactive control cases outperforms all of the other cases for the vast majority of hazards and performance indices, provided that the right control weights are utilized.

This is a manuscript of an article from Journal of Structural Engineering, 142(12); June 2016, doi: 10.1061/(ASCE)ST.1943-541X.0001580. Posted with permission.

Copyright Owner
American Society of Civil Engineers
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Citation Information
Liang Cao, Simon Laflamme, Douglas Taylor and James Ricles. "Simulations of a Variable Friction Device for Multihazard Mitigation" Journal of Structural Engineering Vol. 142 Iss. 12 (2016)
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