Tests of a novel re-centering damper with SMA rods and friction wedges

Zhang, Shaoyuan; Hou, Hetao; Qu, Bing; Zhu, Yongjing; Li, Kefan; Fu, Xinrui

doi:10.1016/j.engstruct.2021.112125

Cited by 17 publications

(4 citation statements)

References 36 publications

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“…It effectively resisted strong earthquakes and had self-resetting driving effect without requiring maintenance. Zhang et al [ 152 ] and Chen et al [ 153 ] designed a new type of SMA rod damper by combining SMA rod and a friction damper, as shown in Figure 16 b,c, and conducted cyclic tensile and compressive tests and finite element simulation. It was found that the damper had a better energy dissipation ability than the damper with SMA wire and was more flexible.…”

Section: Sma Isolation Devices In Building Structuresmentioning

confidence: 99%

See 1 more Smart Citation

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

Xu,

Zhu,

Zhao

et al. 2024

Materials

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Shape memory alloy (SMA), a type of smart material, is widely used in the design of reinforcement and repair, isolation, and shock absorption of building structures because of its outstanding characteristics, such as the shape memory effect (SME), superelasticity (SE), and high damping. It not only improves the bearing capacity, ductility, and mechanical properties of the structural components of buildings but can also effectively slow down the strong response of engineering structures under the effect of an earthquake. It plays a key role in energy dissipation and shock absorption as well as sustainable development. To promote the application of SMA in building structures, this paper summarizes the research on the use of SMA as a reinforcing material in building structures, including work related to SMA material characteristics and types, SMA-reinforced structural components, and SMA isolation devices. In addition, the shortcomings of SMA applications in building structures are analyzed, and valuable suggestions for future research methods are put forward. SMA has been applied to engineering practice in the form of embedded and external reinforcement, which shows that it has broad application prospects in future buildings.

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Section: Sma Isolation Devices In Building Structuresmentioning

confidence: 99%

“… Various SMA dampers: ( a ) self-resetting damper [ 151 ]; ( b ) wedge damper [ 152 ]; ( c ) SMA-based variable friction damper [ 153 ]; ( d ) U-shaped damper [ 154 ]. …”

Section: Figurementioning

confidence: 99%

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

Xu,

Zhu,

Zhao

et al. 2024

Materials

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“…SMAs are applied in different fields such as biomedical, aerospace, and civil structures [ 15 ]. In civil structures, different shapes of SMAs are used for the retrofitting and strengthening of structures, such as application in seismic isolators [ 16 , 17 , 18 , 19 ], steel beam–column connections [ 20 , 21 , 22 ], bracing systems [ 23 , 24 , 25 , 26 , 27 ], different types of dampers [ 28 , 29 , 30 , 31 ], reinforced concrete beams [ 32 , 33 , 34 ], reinforced concrete columns [ 35 , 36 , 37 , 38 , 39 , 40 , 41 ], reinforced concrete slabs [ 42 ], reinforced concrete beam–column connections [ 43 , 44 , 45 , 46 ], and wood structures [ 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Mechanical Behavior and Energy Dissipation in Fiber-Reinforced Polymers through Shape Memory Alloy Integration: A Numerical Study on SMA-FRP Composites under Cyclic Tensile Loading

Eilbeigi,

Tavakkolizadeh,

Masoodi

2023

Materials

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Conventional fiber-reinforced polymers (FRPs) have a relatively linear stress–strain behavior up to the failure point. Therefore, they show brittle behavior until the failure point. Shape memory alloys, in addition to having high ductility and good energy dissipation capability, are highly resistant to corrosion and show good performance against fatigue. Therefore, using the SMA fibers in the production of FRPs can be a suitable solution to solve the problem of the brittle behavior of conventional FRPs. SMA fibers can be integrated with a polymeric matrix with or without conventional fibers and create a new material called SMA-FRP. This study investigates the effect of using different volume fractions of conventional fibers (carbon, glass, and aramid) and SMA fibers (NiTi) in the super-elastic phase and the effect of the initial strain of SMA fibers on the behavior of SMA-FRP composites under cyclic tensile loading. Specimens are designed to reach a target elastic modulus and are modeled using OpenSees (v. 3.5.0) finite element software. Analyzing the results shows that in the SMA-FRP composites that are designed to reach a target elastic modulus, with an increase in the volume fraction of SMA fibers, the maximum stress, residual strain, and strain hardening ratio are reduced, and the ability to energy dissipation capability and residual stress increases. It was also observed that increasing the percentage of the initial strain of SMA fibers increases the maximum stress and energy dissipation capability and reduces the residual strain and yield stress. In the investigation of the effect of the type of conventional fibers used in the construction of composites, it was found that the use of fibers that have a larger failure strain increases the maximum stress and energy dissipation capability of the composite and reduces the strain hardening ratio. In addition, increasing the elastic modulus of conventional fibers increases the residual strain and residual stress of the composites.

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“…To decrease the force and deformation characteristics of shear wall structures with coupling beams, researchers generally adopted energy dissipation methods, that is, the installation of shear dampers at the inflection point in the middle span of the coupling beams, such that the deformation and seismic energy dissipation mainly occur in the dampers, thus alleviating the plastic damage of the coupling wall-columns and main structures. Over the years, researchers have examined various coupling beam dampers with different energy dissipation principles, such as friction dampers, [3][4][5][6][7][8][9] viscoelastic dampers, [10][11][12] and metal dampers. [13][14][15] Composite dampers with multiple energy dissipation principles have also been proposed and developed, for example, metal and viscoelastic composite dampers, [16][17][18] steel tube and lead core composite dampers, [19][20][21][22] lead and rubber composite dampers, [23][24][25] etc.…”

Section: Introductionmentioning

confidence: 99%

Development and investigation of an innovative shape memory alloy cable‐controlled self‐centering viscoelastic coupling beam damper for seismic mitigation in coupled shear wall structures

Qian

Fan

Shi

et al. 2022

Earthq Engng Struct Dyn

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To improve the seismic performance of coupled shear walls in high‐rise buildings and to eliminate the problems of large residual deformation and relatively small initial stiffness and damping properties of the traditional viscoelastic coupling beam damper (TVCBD), an innovative shape memory alloy (SMA)‐cable‐controlled self‐centering viscoelastic coupling beam damper (SVCBD) with energy dissipation and self‐centering capabilities was designed and investigated in this study. The construction form and operating principles of the SVCBD were proposed, relevant material performance tests of the cables were performed, and good results were obtained. Finally, the contribution of the SVCBD to seismic mitigation of a 10‐story reinforced concrete coupled shear wall structure was verified by seismic time‐history analyses. The results indicated that compared with TVCBD, SVCBD possesses fuller hysteretic curves, showing stronger energy dissipation capacity, higher initial stiffness, and much smaller residual deformation. The initial strain and cross‐sectional area of the SMA cables and the shear area of the viscoelastic plates affect the energy dissipation and self‐centering performance of SVCBD significantly. The seismic response and post‐earthquake residual deformation of the coupled shear wall structure and the plastic damage of the main components can be effectively controlled by utilizing the proposed SVCBD.

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Tests of a novel re-centering damper with SMA rods and friction wedges

Cited by 17 publications

References 36 publications

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

Enhancing Mechanical Behavior and Energy Dissipation in Fiber-Reinforced Polymers through Shape Memory Alloy Integration: A Numerical Study on SMA-FRP Composites under Cyclic Tensile Loading

Development and investigation of an innovative shape memory alloy cable‐controlled self‐centering viscoelastic coupling beam damper for seismic mitigation in coupled shear wall structures

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