Development and optimization of a novel response‐amplified friction damper with different friction pairs

Jingwei Gao; ShouTan Song; Chun‐Lin Wang; Bin Zeng

doi:10.1002/eqe.4070

journal article Dec 22, 2023

Development and optimization of a novel response‐amplified friction damper with different friction pairs

Jingwei Gao

ShouTan Song Chun‐Lin Wang

Bin Zeng

Earthquake Engineering & Structural Dynamics Vol. 53 No. 3 pp. 1285-1307 · Wiley

View at Publisher Save 10.1002/eqe.4070

Abstract

AbstractIn order to improve the efficiency of friction dampers, a shear‐type response‐amplified friction damper (RAFD) was proposed, which utilized a lever mechanism to amplify the shear displacement and increase the sliding distance of friction pairs. Cyclic loading tests were conducted on 12 RAFD specimens to evaluate the effects of machining processes, friction materials, loading protocols, and bolt pretension on the mechanical performance of the specimens. The results showed that the RAFD specimens with NAO and brass friction pads exhibited plump hysteresis loops, and the bearing capacity, effective stiffness, energy dissipation, and equivalent viscous damping ratio all met the stability requirements of FEMA 356 for the friction damper. Reducing the clearance between pins and holes and strengthening the hole edges shortened the plateau near zero resistances of the hysteresis loops by 75%–90%. Furthermore, combined with rotational analysis of the lever, a design methodology for the RAFD specimen was developed. Based on the response amplification factor R, key mechanical indices such as bearing capacity and equivalent friction coefficient were derived, and a theoretical hysteresis model for the RAFD was constructed, which matched well with experimental results.

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Metrics

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References

Details

Published: Dec 22, 2023
Vol/Issue: 53(3)
Pages: 1285-1307
License: View

Authors

J

Jingwei Gao

Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Southeast University Nanjing China

S

ShouTan Song

Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Southeast University Nanjing China

C

Chun‐Lin Wang

Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Southeast University Nanjing China

B

Bin Zeng

Central Research Institute of Building and Construction MCC Group Beijing China

Funding

National Natural Science Foundation of China Award: 52278488 51838004

Cite This Article

Jingwei Gao, ShouTan Song, Chun‐Lin Wang, et al. (2023). Development and optimization of a novel response‐amplified friction damper with different friction pairs. Earthquake Engineering & Structural Dynamics, 53(3), 1285-1307. https://doi.org/10.1002/eqe.4070

Development and optimization of a novel response‐amplified friction damper with different friction pairs

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