Experimental investigations on seismic control of cable-stayed bridges using shape memory alloy self-centering dampers

Zhou, Peng; Liu, Min; Li, Hui; Song, Gangbing

doi:10.1002/stc.2180

Cited by 37 publications

(20 citation statements)

References 41 publications

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“…The significant hysteresis in the stress-strain relationship of SMAs makes them an ideal candidate for implementation in passive vibration control [73][74][75][76]. Applications include control of stay cables [77,78], isolation bearings [79][80][81][82][83][84], and frame braces [85,86]. Due to its high damping capacity, SMA is an ideal energy dissipating material in passive control.…”

Section: Pounding Tuned Mass Damper (Ptmd) and Energy Dissipating Matmentioning

confidence: 99%

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

et al. 2019

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Piping systems are important nonstructural components of most types of buildings. Damage to piping systems can lead to significant economic losses, casualties, and interruption of function. A survey of earthquake disaster sites shows that suspended piping systems are flexible and thus prone to large deformation, which can lead to serious damage of the piping systems. The single-sided pounding tuned mass damper (PTMD), which is an emerging vibration suppression tool, has the potential to serve as a cost effective and non-invasive solution for the mitigation of vibration in suspended piping systems. The operating frequency of the single-sided PTMD can be tuned similarly to a tuned mass damper (TMD). The single-side PTMD also possesses high energy dissipation characteristics and has demonstrated outstanding performance in vibration control. One of the key factors affecting the performance of the PTMD is the damping material, and there is a constant search for the ideal type of material that can increase the performance of the PTMD. This paper explores the use of shape memory alloy (SMA) sponge as the damping material for two types (spring steel and pendulum types) of PTMDs to mitigate the vibration of a suspended piping system. The PTMDs are tested both in free vibration and in forced vibration. The results are compared with no control, with a TMD control, and with a viscoelastic (VE) material PTMD control. The results show that in free vibration tests, SMA–PTMDs attenuate the displacement of the piping system significantly. The time to mitigate vibration (i.e., reduce 90% of the vibration amplitude) is reduced to 6% (for spring steel type) and 11% (for pendulum type) of the time taken to mitigate vibration without control. In forced vibration tests, the overall magnitudes of the frequency response are also lowered to 38% (spring steel) and 44% (pendulum) compared to vibration without control. The results indicate that SMA has the potential to be a promising energy dissipating material for PTMDs.

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Section: Pounding Tuned Mass Damper (Ptmd) and Energy Dissipating Matmentioning

confidence: 99%

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

et al. 2019

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“…The experimental results demonstrated that the dampers were effective in reducing both the peak and residual deformation of the structure subjected to strong earthquakes. Apart from damping systems, SMAs have also been considered in other seismic resistant devices and members, including braces, beam‐to‐column connections, base isolators, and bridges …”

Section: Introductionmentioning

confidence: 99%

“…Apart from damping systems, SMAs have also been considered in other seismic resistant devices and members, including braces, [14][15][16][17] beam-to-column connections, [18][19][20][21][22][23][24] base isolators, 25,26 and bridges. 27,28 Although the wire form of SMA has proven to be effective in providing energy dissipation and self-centring capability, there are still practical issues such as difficulty of gripping (especially when a large number of wires are to be included) and vulnerability to fracture at the gripping region due to local stress concentration. It is noticed that most of the existing prototype damping devices are small-scale ones, where the level of load resistance is generally inadequate for practical use.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and performance of a novel self‐centring damper with shape memory alloy ring springs for seismic resilience

Wang

Fang

Zhang

et al. 2019

Struct Control Health Monit

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Summary This paper discusses the manufacturing process and mechanical performance of a novel self‐centring damper equipped with a group of kernel elements, namely, shape memory alloy (SMA) ring springs. The study commences with an experimental investigation on individual SMA ring spring specimens, enabling a fundamental understanding of their working principle and mechanical performance. Some technical issues related to manufacturing process, low‐temperature heat treatment (annealing), quenching, and cyclic training are also discussed. Subsequently, the fabrication steps and working mechanism of the dampers incorporating the SMA ring springs are elaborated, and a further experimental study on a large‐scale prototype damper specimen is carried out. The test results show that the damper specimen exhibits satisfactory mechanical behaviour with a stable flag‐shaped load–displacement hysteretic response. A high initial stiffness and an adequate level of “yield” resistance are exhibited due to a relatively high preload applied to the SMA ring spring group. Excellent self‐centring capability with no residual displacement is observed, and satisfactory energy dissipation with an equivalent viscous damping ratio of up to 18.5% is shown. No failure to any component of the damper is observed by the end of the test. The proposed damper is expected to resist strong earthquakes and offer self‐centring driving action effectively for engineering structures without the need for repair.

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“…Compared with electrorheological fluid, magnetorheological fluid (MRF), and shape memory alloy, shear thickening fluid (STF) is another smart material with excellent performance given that the characteristics of STF depend on its shear strain rate. Under high strain rate loading, the apparent viscosity of the contact interface changes dramatically, even from liquid phase to solid phase .…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on hysteretic behavior of a shear thickening fluid damper

Wei

Lin

Liu

2019

Struct Control Health Monit

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Summary In this study, a shear thickening fluid (STF) damper was experimented upon under different loading frequencies and amplitudes to investigate its nonlinear hysteretic behavior and energy dissipation capacity. An STF sample with 20% mass fraction and dispersion medium were prepared by nanoparticle silica (SiO2) and polyethylene glycol (PEG200). By using a parallel‐plate rheometer, steady‐state experiments were carried out to characterize the rheological properties of the sample. The results indicate that the STF sample shows an abrupt increase in viscosity/stress beyond a critical shear rate/strain. The results also show that the STF sample has good reversibility, thixotropy, and stability and can be used as a smart damping material in damper devices. Also, a prototype damper was developed and manufactured. Its nonlinear hysteretic behavior and energy dissipation capacity were experimentally investigated through the responses of damping force–displacement and damping force–velocity. The results show that the STF damper has excellent damping force as the loading condition increases and the controllability can be increased up to 3.21 times. The results also show that the energy dissipation capacity formed by damping force–displacement becomes fuller as the loading condition increases. Moreover, the results show that the graphical shapes of hysteretic loops of damping force–velocity can exhibit various styles as the STF's mechanism changes but the shapes are not stable when the velocity exceeds a certain value.

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Experimental investigations on seismic control of cable-stayed bridges using shape memory alloy self-centering dampers

Cited by 37 publications

References 41 publications

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

Manufacturing and performance of a novel self‐centring damper with shape memory alloy ring springs for seismic resilience

Experimental investigation on hysteretic behavior of a shear thickening fluid damper

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