Seismic performance evaluation of a structure retrofitted using steel slit dampers with shape memory alloy bars

Naeem, Asad; El-Din, Mohamed Nour; Kim, Jinkoo; Kim, Joowoo

doi:10.1007/s13296-017-1227-4

Cited by 32 publications

(9 citation statements)

References 24 publications

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“…Figure 4(b) depicts the one complete cycle of the force–deformation curve of the HD and the SD used in the analysis. Further more details about the modeling of SMA can be found elsewhere (Naeem et al, 2017)…”

Section: Nonlinear Modeling Of the Hdsmentioning

confidence: 99%

“…The literature review reveals that limited studies have been conducted on the LCC of building structures retrofitted with energy dissipation devices made of SMA. The objective of the current study is to investigate the seismic performance of structures with HDs composed of steel slit dampers (SDs) and SMA bars developed by Naeem et al (2017). The LCC is evaluated using full fragility curve, obtained from complete rigorous incremental dynamic analysis, and the results are compared to the simplified LCC methodology using an approximate fragility curve (AFC).…”

Section: Introductionmentioning

confidence: 99%

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Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Noureldin

Naeem

Kim

2018

Advances in Structural Engineering

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In this study, the seismic capacity of a hybrid damper, composed of a steel slit plate damper and two shape memory alloy bars, is investigated through fragility analysis and life-cycle cost evaluation of a steel frame retrofitted with the damper. The nonlinear time history analysis model frames show that the seismic responses of the frames equipped with hybrid damper are significantly lesser than the frames retrofitted with conventional slit dampers. The enhancement in the seismic performance of frames retrofitted with hybrid damper is because of extra stiffness, energy dissipation, and self-centering capability provided by the shape memory alloy bars. It is also observed that the life-cycle cost of the frames equipped with hybrid dampers is smallest compared with the life-cycle cost of the bare frames and the frames equipped with slit dampers, even though the initial cost is of the hybrid damper is higher than that of the conventional slit damper.

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Section: Nonlinear Modeling Of the Hdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Noureldin

Naeem

Kim

2018

Advances in Structural Engineering

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“…SMA has been widely used in the field of structural vibration control recently. Ren [7] et al proposed that the addition of SMA material in friction series composite dampers can effectively control the vibration of eccentric structures; Naeem [8] et al studied the vibration control performance of SMA dampers by using numerical simulation; Huang [9] et al improved the nodal energy dissipation performance by using SMA material to reduce the residual deformation of wood structures; Mani [10] et al studied an SMA-based dynamic absorber and used a single-chip microcomputer to change the SMA spring current to achieve dynamic variable vibration control effect.…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis and Control of the Suspension System of the Drum Washing Machine by Applying SMA

Sun

2022

J. Phys.: Conf. Ser.

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The suspension system of the drum washing machine is the object of study. To reduce the vibration of drum washing machines during high-speed dehydration, a shape memory alloy is proposed to be used to make suspension spring. The spring stiffness can be controlled according to the characteristic that the elastic modulus of SMA varies with temperature to achieve damping effect. The mathematical model and multi-body dynamics simulation model are established for the suspension system of the drum washing machine, the vibration generation mechanism of the drum washing machine and the SMA active vibration control principle are analyzed, and the vibration control effect of the SMA suspension spring is studied for different speed simulations. The results show that the SMA variable stiffness suspension spring has a significant vibration control effect compared with the spring of general material.

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“…The results showed that with increasing the initial load drift, the deformation of the steel cantilever damper plastic increases, and the total energy dissipation in the second stage is significantly reduced; however, no severe damage was observed in the wall. Naeem et al [9] built a hybrid energy dissipator by combining a memory alloy rod with a slotted steel plate. The results showed that the maximum drift between the floor and the displacement of the roof of the model structure equipped with a bar made of memory alloy is significantly reduced.…”

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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Seismic performance evaluation of a structure retrofitted using steel slit dampers with shape memory alloy bars

Cited by 32 publications

References 24 publications

Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Vibration Analysis and Control of the Suspension System of the Drum Washing Machine by Applying SMA

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

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