An improved tuned mass damper (SMA-TMD) assisted by a shape memory alloy spring

Mishra, Sudib Kumar; Gur, Sourav; Chakraborty, Subrata

doi:10.1088/0964-1726/22/9/095016

Cited by 73 publications

(51 citation statements)

References 45 publications

(81 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang and Zhu used stranded SMA wires to develop a new smart damper, which exhibited adjustable hysteretic behaviour and good repeatability. Mishra et al proposed a new version of tuned mass damper assisted by SMA springs for seismic vibration mitigation. Qian et al performed small‐scale shaking table tests on building structures equipped with SMA‐friction dampers.…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…Semi-active vibration absorbers, which enabled real-time tuning of the frequency and the damping, were proposed by Weber and his collaborators [2][3][4]. Mishra et al [5] replaced the linear spring in a traditional TMD with a spring made of shape memory alloy (SMA). The simulation results demonstrated significant improvements of the SMA-TMD in the control efficiency at a much reduced mass ratio compared with a linear TMD.…”

Section: Introductionmentioning

confidence: 99%

Impact Fatigue of Viscoelastic Materials Subjected to Pounding

2018

View full text Add to dashboard Cite

Abstract:The pounding tuned mass damper (PTMD) is a novel vibration control device that can be used for many different structures. The PTMD utilizes a viscoelastic delimiter to enhance its vibration control effectiveness and robustness though pounding between the tuned mass and the viscoelastic material. However, the viscoelastic material is subjected to repeated poundings during its service life, which influences the property of the material and degrades its energy dissipation ability. Therefore, this study investigates the fatigue behavior of the viscoelastic material under impact loading. An experimental apparatus, which can generate and sense the lateral impacts, is designed and fabricated to facilitate the fatigue study of the viscoelastic material subject to impact loading. Based on experimental data, the pounding stiffness and the hysteresis loops are employed to characterize the behavior of the material. It is revealed that the impact fatigue process can be divided into two phases: the cyclic-hardening phases and the cyclic-softening phase. The energy dissipation is firstly reduced, and then increased, by the repeated impacts. In summary, with a total of 360,000 impacts, the viscous elastic material is still effective in dissipating impact energy.

show abstract

“…In another group of nonlinear TMDs, super elastic shape memory alloys (SMAs), due to their ability of large strain retrieval upon unloading, have been exploited. Mishra et al investigated seismic responses of a passive TMD in which the linear spring and the viscose damper are replaced by a super elastic SMA spring. The study results demonstrated more reduction of structural demands by the nonlinear TMD while it has a smaller mass ratio and damper stroke in comparison with conventional linear TMDs.…”

Section: Introductionmentioning

confidence: 99%

Effects of hysteretic damping on the seismic performance of tuned mass dampers

Kiani

Amiri

2018

Structural Design Tall Build

View full text Add to dashboard Cite

A tuned mass damper (TMD) as a convenient passive device in average to tall buildings has limitations specifically against broad band seismic excitations. According to evidences from the literature, this drawback can be dominated by using nonlinear stiffness in TMDs; however, past studies did not explore this issue, and observations are not sufficient to reach a conclusion about seismic performance of nonlinear TMDs. This paper considers seismic performance of a nonlinear TMD developed by adding a martensitic shape memory alloy spring with significant stable features to conventional TMDs. To this end, single degree of freedom structures (from short to large periods) equipped with the nonlinear TMD are investigated subjected to set of ground motions, and through numerical analyses, effects of hysteretic damping and energy absorption capacity of the nonlinear TMD are examined. In addition, features of the proposed TMD configuration and effects of the excitation properties have been scrutinized through graphing frequency response curves by the arc length continuation method. Results indicate that the proposed configuration can make the nonlinear TMD robust against variations of the loading properties. Moreover, due to significant hysteretic damping of the shape memory alloy, spring seismic performance of the nonlinear TMD is better than conventional TMDs.

show abstract

An improved tuned mass damper (SMA-TMD) assisted by a shape memory alloy spring

Cited by 73 publications

References 45 publications

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

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

Impact Fatigue of Viscoelastic Materials Subjected to Pounding

Effects of hysteretic damping on the seismic performance of tuned mass dampers

Contact Info

Product

Resources

About