High capacity variable friction damper based on band brake technologyEngineering Structures
Publication VersionAccepted Manuscript
AbstractImplementation of high performance controllable damping devices can ameliorate cost-effectiveness of structural systems for mitigation of natural hazards. However, the applications of these damping systems are limited due to a lack of (1) mechanical robustness; (2) electrical reliability; and (3) large resisting force capability. To broaden the implementation of modern damping systems, a novel semi-active damping device is proposed. The device, termed Banded Rotary Friction Device (BRFD), has enhanced applicability compared to other proposed damping systems due to its cost-effectiveness, high damping performance, mechanical robustness, and technological simplicity. Its mechanical principle is based on a band brake, which results in a high amplification of the applied force while enabling a variable control force. The theoretical model of the BRFD is presented and experimentally verified by subjecting a prototype to various harmonic loads. Results show that the prototype BRFD is capable of a maximum force of 45 kN (10 kips) using only a 267 N (60 lb) actuation force, therefore providing a mechanical advantage of 169. A 3-stage dynamic model previously developed by the authors can successfully be used to model the dynamic behavior of the BRFD.
Copyright OwnerElsevier Ltd
Citation InformationAustin R.J. Downey, Liang Cao, Simon Laflamme, Douglas Taylor, et al.. "High capacity variable friction damper based on band brake technology" Engineering Structures Vol. 113 (2016) p. 287 - 298
Available at: http://works.bepress.com/simon_laflamme/44/