Seismic performance assessment of steel frames with shape‐memory alloy wire‐based dampers

Falahian, Afsaneh; Asadi, Payam; Riahi, Hossein Tajmir; Haghy, Mahsa

doi:10.1002/tal.1797

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Similar behavior of SMA is examined by reinforcing NiTi wires in a steel braced frame [11]. SMA wires-based dampers has been studied for vulnerability reduction in the braced frames [12]. Except SMA wires and bars, SMA rings are also utilized as damper device and the symmetry of single and dual rings have been also studied [13].…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Superelastic SMA Damper Retrofitted Building

2022

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Nonlinear dampers are well known retrofitting system for the building structure, to mitigate seismic hazard. In past, among different type of nonlinear dampers, metallic yield dampers gain significant attention due to its high energy dissipation capacity. However, it has been observed while yield damper reduces floor displacement, but increases floor acceleration and leaves large residual displacement at the end of ground motion. Present study focuses on the application of shape memory alloy (SMA) dampers as an alternative to the yield damper, for retrofitting of building structure under seismic loading. Thus, response analyses are performed for nonlinear building structure without and with yield damper or SMA damper, under a large number of ground motion. Vibration control efficiency of yield and SMA damper are estimated in terms of the absolute maximum values of the floor acceleration, interstory drift ratio, and residual displacement. Response parameters are estimated over wide range of parameters of damper, building structure, and ground motion. Parametric study results revealed that yield damper provides very less acceleration control efficiency and some of cases it become more than uncontrolled structure. In contrast SMA damper slightly improves the acceleration control than yield damper (almost 14 %). In Comparison to the yield damper, SMA damper reduces the interstory drift ratio by 38 % and residual floor displacement by 47 %. Therefore, SMA damper provides major advantage in floor displacement reduction over yield damper, and acts as better re-centring device for seismic retrofitting application.

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Section: Introductionmentioning

confidence: 99%

Seismic Performance of Superelastic SMA Damper Retrofitted Building

2022

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“…It was observed that the hysteresis diagram is stable and has good ductility and energy dissipation. Falahian et al [18] investigated the seismic performance of a steel frame equipped with a selfcentering damper. The results showed that the proposed damper limits the residual drifts.…”

Section: Introductionmentioning

confidence: 99%

Performance of Reinforced Concrete Shear Wall Equipped with an Innovative Hybrid Damper

Abedi

Jalali

Shafaei

2021

IJE

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The performance of simultaneous application of steel cantilever damper and Shape Memory Alloy (SMA) rods in the reinforced concrete (RC) shear wall was investigated. In this regard, the critical numerical validation of three full-scale experimental models were distinctly performed and the results were analyzed. Various aspects of numerical modelling, including material modelling assumptions, behavioural models, elements, and solution methods were compared with experimental results. Specimens considering SMA rods as well as steel cantilever damper were numerically investigated. The results illustrated that with increasing the SMA rod angle, the maximum force was decreased, and the residual displacement and dissipated energy was improved. Also, comparing the specimen results without the SMA rods and the specimen with the SMA rods showed that despite the positive effect of the SMA rods, which leads to an increase in maximum force and reduction of residual displacement, the dissipated energy was decreased.

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An Experimental Study of an SMA-Based Self-Centering Damper

2022

Int J Steel Struct

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Seismic performance assessment of steel frames with shape‐memory alloy wire‐based dampers

Cited by 5 publications

References 39 publications

Seismic Performance of Superelastic SMA Damper Retrofitted Building

Seismic Performance of Superelastic SMA Damper Retrofitted Building

Performance of Reinforced Concrete Shear Wall Equipped with an Innovative Hybrid Damper

An Experimental Study of an SMA-Based Self-Centering Damper

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