Numerical investigation of the behavior characteristics of yield friction dampers

Heon Woo Lee , Young Chan Kim , Han Min Cho , Jong Wan Hu

Abstract

In a vibration control structure, a damper is a key device that dissipates energy generated in the structure. Recently, dampers with new materials and structural shapes have been developed, but friction and steel dampers, which have simple energy dissipation mechanisms and are highly cost-effective, are widely used in practice. In this study, a numerical investigation study was conducted on a yield friction damper combining a friction damper and a steel damper using existing materials. The yield friction dampers are designed in a modular form and induce friction by applying friction bolts. For numerical investigation, the bolt load and strut pitch are basically set as parameters, and finite element analysis is performed on the conventional slit damper and yield friction damper. As a result of the analysis, it was confirmed that the yield friction damper had improved maximum force and energy dissipation performance compared to the existing slit damper.

Key Words

damper; energy dissipation; finite element analysis; friction; yielding

Address

Heon Woo Lee — Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Republic of Korea
Young Chan Kim — 1)Industry-Academic Cooperation Foundation, Incheon National University, Incheon 22012, Republic of Korea 2)Incheon Disaster Prevention Research Center, Incheon National University, Incheon 22012, Republic of Korea
Han Min Cho — Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea
Jong Wan Hu — Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Republic of Korea

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