Seismic response attenuation of structures using shape memory alloy dampers

Parulekar, Y. M.; Reddy, G. R.; Vaze, K.K.; Guha, S. N.; Gupta, Chandni; Muthumani, K.; Sreekala, R.

doi:10.1002/stc.428

Cited by 57 publications

(48 citation statements)

References 23 publications

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“…Shape memory alloys (SMA) have attracted attention as a smart material that can be employed in civil structures to dissipate seismic energy and provide self-centering capabilities. Among various applications of SMAs in seismic engineering, [5][6][7][8][9][10] SMA-based bracing systems have been one of the most commonly studied approach to enhance seismic performance of civil structures. Several researchers have numerically investigated the performance of SMA-braced frames by assuming an SMA brace that consists of short SMA elements and connected to a rigid segment.…”

Section: Introductionmentioning

confidence: 99%

Influence of shape memory alloy brace design parameters on seismic performance of self‐centering steel frame buildings

Shi

Ozbulut

Zhou

2019

Struct Control Health Monit

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Summary This paper investigates the seismic and collapse performance of shape memory alloy (SMA) braced steel frame structures considering the effects of various brace design parameters and ultimate state of SMAs. An SMA‐braced steel frame building is designed to have comparable strength and stiffness with a steel‐moment resisting frame selected as case study building. Then, the stiffness and ultimate deformation capacity of the SMA braces in the initially designed reference SMA‐braced frame are systematically varied. First, the static pushover analysis and incremental dynamic analysis are employed to illustrate the significance of SMA brace failure consideration in seismic performance assessment of steel frames with SMA elements. Then, the influence of SMA brace initial stiffness and ultimate deformation capacity on the seismic and collapse performance of SMA braced frames are studied through pushover analyses, nonlinear response history analyses, and incremental dynamic analysis. The results show that the SMA brace initial stiffness does not affect the interstory drift and floor absolute acceleration response at design and maximum considered earthquake level seismic hazard or collapse capacity of the frame. However, it has considerable influence on post‐event functionality of the frame. It is also found that the SMA brace ultimate deformation capacity should be at least 80% of maximum interstory drift demand at maximum considered earthquake level for satisfactory seismic performance, whereas larger values provide higher collapse capacity for the SMA‐braced frame.

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Section: Introductionmentioning

confidence: 99%

Influence of shape memory alloy brace design parameters on seismic performance of self‐centering steel frame buildings

Shi

Ozbulut

Zhou

2019

Struct Control Health Monit

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“…NiTi shape memory alloys (SMAs) are unique functional materials that have the ability to undergo large deformations and can return to their original state through removal of stress (known as the superelastic effect) and dissipate energy without residual deformation . With the advantageous properties of pseudoelasticity, large ductility, large elastic strain (6–8%), excellent corrosion resistance, re‐centering, and fatigue resistance, many researchers have used SMAs for the vibration control of civil structures and have verified their effectiveness in seismic‐resistant designs and applications …”

Section: Introductionmentioning

confidence: 99%

“…The results showed that SMA wire dampers could effectively reduce the seismic response. Parulekar et al proposed an SMA damper device and conducted cyclic testing on the device to prove its effectiveness in energy absorption capacity. Li et al experimentally studied two SMA dampers installed in the first story of a 1/4‐scale five‐story two‐bay frame and observed the effective response‐mitigation performance of the SMA dampers.…”

Section: Introductionmentioning

confidence: 99%

A re-centering deformation-amplified shape memory alloy damper for mitigating seismic response of building structures

Huang

2018

Struct Control Health Monit

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Summary This paper presents an innovative re‐centering deformation‐amplified shape memory alloy damper (RDASD) to reduce the responses of civil structures under earthquake motions. The damper can amplify the displacement deformation according to actual needs and fully exploit the energy dissipation capacity of superelastic shape memory alloy materials. Cyclic tensile‐compressive tests of the fabricated RDASD are conducted to study the influence of the displacement amplitude and loading rate on the damper's mechanical properties. Additionally, a theoretical model of the RDASD that can precisely simulate the hysteretic characteristics of the damper is proposed. Finally, a nonlinear time history analysis is performed on a six‐story steel frame for three cases: no dampers, dampers without deformation amplification, and dampers with deformation amplified by a factor of 2.5. The results show that the proposed RDASD can not only effectively mitigate the displacement, acceleration, and interstory drift responses due to its efficient energy dissipation capacity but also provide superior re‐centering by amplifying the relative deflection for building structures. In practical applications, the recommended range for the deformation amplification coefficient of the damper is 2.0–3.0.

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“…Several studies have been carried out in the field of response, optimization and design of structures equipped with passive dampers . Xia and Hanson studied two 10‐story frame structures with ADAS devices with different parameters to find out their performance under seismic loading.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance assessment of steel frames equipped with a novel passive damper using a new damper performance index

Mahjoubi

Maleki

2014

Struct. Control Health Monit.

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Summary Seismic response of steel moment‐resisting frames equipped with a novel passive damper called infilled‐pipe damper (IPD) is investigated in this study. The IPD is a very economical and easily assembled structural control device with high energy absorption, invented recently by the authors. A simplified trilinear load–displacement model for IPD devices is suggested to be used in this study and further investigations. Next, criteria for IPD elements size selection are proposed for passive control of structures against earthquake loads. Steel frame structures of 5, 10, and 20 stories are designed without any IPD devices. Then, the frames are equipped with IPDs of different stiffness. The frames are subjected to seven earthquake excitations scaled to design basis earthquake and maximum considered earthquake levels. Several response parameters including energy segments and normalized energy ratios are considered, and the performance of the IPDs in reducing each response is evaluated. A new damper performance index, considering global structural damage, local destructive damage and nonstructural damage in a single relationship, is suggested in this study. The index can be employed for optimization purposes in structures equipped with different types of dampers. The results show that the IPD devices dissipate a considerable portion of the seismic input energy and reduce the structural and nonstructural damages. Copyright © 2014 John Wiley & Sons, Ltd.

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Seismic response attenuation of structures using shape memory alloy dampers

Cited by 57 publications

References 23 publications

Influence of shape memory alloy brace design parameters on seismic performance of self‐centering steel frame buildings

Influence of shape memory alloy brace design parameters on seismic performance of self‐centering steel frame buildings

A re-centering deformation-amplified shape memory alloy damper for mitigating seismic response of building structures

Seismic performance assessment of steel frames equipped with a novel passive damper using a new damper performance index

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