Steel confined yielding damper for earthquake resistant design Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/rn301352x

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  • An experimental study of a passive energy dissipation tension-compression yielding brace or buckling restrained brace has been conducted. The Confined Yielding Damper (CYD) consists of a steel yielding core confined within a tube filled with non-cohesive media. The external tube and confined non-cohesive media provide lateral stability to the core enabling the device to yield in compression as well as tension. This device is similar to the Unbonded Brace developed by Nippon Steel of Japan. Fourteen full-scale CYDs were tested to determine the effect of varied confining media, perforation blocking configuration, and a random displacement history. Based on the Confined Yielding Dampers tested relatively stable and symmetric hysteretic damping can be achieved with the CYD device.
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