Simulations of a Variable Friction Device for Multihazard MitigationJournal of Structural Engineering
Publication VersionAccepted Manuscript
AbstractThis 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.
Copyright OwnerAmerican Society of Civil Engineers
Citation InformationLiang 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)
Available at: http://works.bepress.com/simon_laflamme/40/