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author:

Yan, Xueyuan (Yan, Xueyuan.) [1] (Scholars:颜学渊) | Yang, Yongtai (Yang, Yongtai.) [2] | Guo, Tonghan (Guo, Tonghan.) [3] | Lan, Guoguan (Lan, Guoguan.) [4] | Mao, Huimin (Mao, Huimin.) [5]

Indexed by:

EI Scopus SCIE

Abstract:

In order to improve the seismic and energy dissipation capacity of the whole structure, a friction-oval section mild steel rod composite damper (FOSRCD) was proposed, and its working principle was clarified. The finite element analysis of FOSRCD was carried out, and the effects of friction, frequency and displacement on the damper performance were studied. Considering the structural characteristics of FOSRCD and the mechanical models of friction dampers and mild steel rod dampers, the restoring force model of the composite dampers was proposed and compared with the numerical simulation results. The results showed that the FOSRCDs had good performance and could provide stable energy dissipation capacities in both directions, with the energy dissipation coefficient exceeding 2.3 and the equivalent damping ratio exceeding 0.37. The theoretical analysis results were in good agreement with the numerical simulation results, which verified the theoretical restoring force model; the FOSRCDs make full use of the friction energy dissipation and the shear and bending energy dissipations of the mild steel rod. It enables the two dampers to work together to achieve the purpose of multi-stage energy dissipation. FOSRCD's structure allows it to dissipate energy in both the X- and Y-directions. The composite dampers have a variety of restoring force models and can be utilized in a wide range of practical applications.

Keyword:

composite damper multi-stage energy dissipation numerical simulation restoring force model

Community:

  • [ 1 ] [Yan, Xueyuan]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Yang, Yongtai]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Guo, Tonghan]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Lan, Guoguan]Longyan Univ, Sch Resource Engn, Longyan 364012, Peoples R China
  • [ 5 ] [Mao, Huimin]Fujian Univ Technol, Sch Ecol Environm & Urban Construct, Fuzhou 350018, Peoples R China

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Source :

BUILDINGS

ISSN: 2075-5309

Year: 2023

Issue: 9

Volume: 13

3 . 1

JCR@2023

3 . 1 0 0

JCR@2023

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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