DESIGN AND NUMERICAL ANALYSIS OF AN INNOVATIVE SELF-CENTERING FRICTION DAMPER

CHANG Zhaoqun; LIU Boquan; HAN Meng; BAI Tao; XING Guohua; WANG Shuangbing

doi:10.13204/j.gyjzG20080402

Volume 51 Issue 9

Jan. 2022

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CHANG Zhaoqun, LIU Boquan, HAN Meng, BAI Tao, XING Guohua, WANG Shuangbing. DESIGN AND NUMERICAL ANALYSIS OF AN INNOVATIVE SELF-CENTERING FRICTION DAMPER[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 138-142,221. doi: 10.13204/j.gyjzG20080402

Citation:

CHANG Zhaoqun, LIU Boquan, HAN Meng, BAI Tao, XING Guohua, WANG Shuangbing. DESIGN AND NUMERICAL ANALYSIS OF AN INNOVATIVE SELF-CENTERING FRICTION DAMPER[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 138-142,221. doi: 10.13204/j.gyjzG20080402

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DESIGN AND NUMERICAL ANALYSIS OF AN INNOVATIVE SELF-CENTERING FRICTION DAMPER

doi: 10.13204/j.gyjzG20080402

School of Civil Engineering, Chang'an University, Xi'an 710061, China

Received Date: 2020-08-04
Available Online: 2022-01-11

Abstract

Abstract

An innovative self-centering friction damper was proposed by utilizing the superelastic property of shape-memory alloy (SMA). The damper with a simple structural configuration and clear load-transfer mechanism, consisted of the self-centering device based on large size SMA bars and frictional energy-dissipation devices. To verify the effectiveness and reliability, the experiment of SMA bars with a diameter of 10 mm subjected to cyclic loads was conducted. Then the numerical model of the damper was constructed by finite element analysis software ABAQUS. The change laws of equivalent stiffness, the energy-dissipation per cycle, the equivalent damping ratio and the residual deformation ratio of the damper were discussed in the different displacement amplitudes, friction and prestressing forces of SMA bars. The simulation results showed that the innovative friction damper exhibited a good self-centering and energy-dissipation capability. The residual deformation of the damper was controlled by the friction and the prestressing force of SMA bars.
- shape-memory alloy bar,
- superelasticity,
- self-centering friction damper,
- residual displacement,
- numerical simulation

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References(15)

References

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