Implementation of shape memory alloy dampers for passive control of structures subjected to seismic excitations

Motahari, Siamak; Ghassemieh, Mehdi; Abolmaali, Seyedali

doi:10.1016/j.jcsr.2007.02.001

Cited by 76 publications

(38 citation statements)

References 21 publications

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“…According to the presented formula of force distribution between the components, the hybrid damper showed recentering capability with maximum energy dissipation capacity. Motahari et al [13] implemented a damper using different phases of SMA to produce a reasonable behavior which is efficient for both energy dissipation and recentering capabilities. Asgarian and Moradi [14] evaluated the seismic performance of steel frames equipped with SMA braces.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Application of Intelligent Passive Devices Based on Shape Memory Alloys in Seismic Control of Structures

2016

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In this study, seismic application of an innovative control device called self-centering hybrid damper (SCHD) is investigated. Two main characteristics of the SCHD result in structural response mitigation. Steel pipe as a vertical link and two transverse pairs of Shape Memory Alloy (SMA) wires are used as energy dissipation and recentering components, respectively. Adjustable design parameters including design load, incorporation percentage of SMA, pipe height and wire inclination angle provide desirable structural responses. A numerical parametric study revealed the effect of each parameter on device performance. Besides, an optimum incorporation percentage of SMA in design load was obtained from the parametric study. The results also indicated that in addition to ideal energy dissipation capability, SCHDs can effectively reduce the permanent displacement. Nonlinear timehistory analysis of a 5-story building equipped with the SCHD was conducted to evaluate the effectiveness of the device. The results indicated that utilization of the proposed innovative damper is an effective way in reduction of roof acceleration, peak interstory drift and permanent displacement.

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Application of Intelligent Passive Devices Based on Shape Memory Alloys in Seismic Control of Structures

2016

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“…A reorientation procedure called detwinning and twinning can take place among martensite variants at low temperatures. Many other phenomenon like shape memory effect, superelasticity also effect SMA behaviours as actuator 1 . The aim of this paper is to discuss about SMAs and its application in civil engineering structures like cable stayed bridges, elevated highway bridges, simply supported bridges and buildings as seismic control device.…”

Section: Introductionmentioning

confidence: 99%

State of Art Review of Shape Memory Alloy Used in Civil Structures as Seismic Control Device

.¹

2015

IJRET

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Shape memory alloys (SMAs) are a kind of smart materials that "remember" their original shapes and can be utilized as an actuators that "change shape, stiffness, position, natural frequency and other mechanical characteristics in response to temperature or electromagnetic fields". SMAs exhibit two different phases i.e. martensite and austensite. Temperature and internal stresses (that play a role in super elasticity) determines the phases that SMA exhibits. The aim of this paper is to discuss about SMAs and its application in civil engineering structures like cable stayed bridges, elevated highway bridges, simply supported bridges and buildings as seismic control device. SMA is used as aactive, semi-active andpassive damper in civil structures. Passive damper has energy dissipation capacity and recentering ability. The recentering property areachieved by SMAs in austenite phase while dissipation ability of austenite is not so muchtherefore detwinning behaviour of SMA in martensite phase is considered increasing the damper's dissipating ability. NiTi SMAs showhigh level of superelastic hysteresis and energy dissipation and it solidify after transformation to stress-inducedMartensite, at roughly 6 to 8% strain. This property aremainly used for utilizing SMAs for hinge restrainer purposes for bridges. By using SMA's actuation property, Intelligent reinforced Concrete (IRC) was developed. IRC utilises strandedmartensite SMA wires for post tensioning and by monitoring electric resistance change of shape memory alloy wires, the strain allocation within concrete are obtained. If there is occurrence of cracks either by earthquakes or explosions, then by heating SMA wire strands results in its contraction and the cracks get reduced. It is observed from the study that SMA is effectively used as a seismic control device for civil structures.

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“…Some researchers have developed SMA-based passive control devices [3][4][5][6][7][8], some others have proposed energy dissipating braces using SMAs [9][10][11][12][13][14][15], while still several other researchers have studied SMA beam-column connections [16][17][18]. Despite the large number of studies for the application of SMAs in seismic control of civil structures, the number of studies that investigate the potential use of SMAs for seismic protection of bridges is limited.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the performance of a sliding-type base isolation system with a NiTi shape memory alloy device considering temperature effects

Ozbulut

Hurlebaus

2010

Engineering Structures

103

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Implementation of shape memory alloy dampers for passive control of structures subjected to seismic excitations

Cited by 76 publications

References 21 publications

Application of Intelligent Passive Devices Based on Shape Memory Alloys in Seismic Control of Structures

Application of Intelligent Passive Devices Based on Shape Memory Alloys in Seismic Control of Structures

State of Art Review of Shape Memory Alloy Used in Civil Structures as Seismic Control Device

Evaluation of the performance of a sliding-type base isolation system with a NiTi shape memory alloy device considering temperature effects

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