Experimental and Theoretical Investigations of a Displacement-Amplified Torsional Damper

Author:

Mao Huimin1ORCID,Yan Xueyuan2ORCID,Ning Xiangliang3ORCID,Shi Shen2ORCID

Affiliation:

1. College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China

2. College of Civil Engineering, Fuzhou University, Fuzhou 350116, China

3. Zhuzhou Times New Material Technology Co., Ltd., Zhuzhou, Hunan 412007, China

Abstract

In this work, a displacement-amplified torsional damper (DATD) is proposed for improving the seismic capacity of the beam-column joints of a frame structure. The proposed DATD uses common steel, lead, and high-damping rubber. This damper exhibits good energy dissipation under small earthquakes. Under strong earthquakes and large displacements, the strengthening of the high-damping rubber can improve the overall stiffness of the damper and increase the energy dissipation. In order to investigate the performance of the proposed DATD, theoretical analyses, simulations, and cyclic loading tests were performed, and their results were compared, showing an overall good agreement.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Condensed Matter Physics,Civil and Structural Engineering

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