SMA for Dampers in Civil Engineering

Isalgué, A.; Lovey, F.C.; Terriault, Patrick; Martorell, F.; Torra, Rosa Maria; Torra, Vicenç

doi:10.2320/matertrans.47.682

Cited by 29 publications

(17 citation statements)

References 7 publications

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“…Level 4: Statistical representation of the material: Each SMA has its own characteristics that define the resulting thermomechanical behavior. For example, single crystal CuZnAl has a different hysteresis cycle than polycrystal CuAlBe or NiTi [4,12]. To be able to represent the different cycles, it is necessary to add statistical information to the model.…”

Section: The 5 Levels Of the Complete Modelmentioning

confidence: 99%

“…All of these physical properties of SMA can be summarized in the evaluation of the PEW usage [12]. The contribution of each effect is evaluated as a temperature increase through which the CC coefficient is converted to a stress change.…”

Section: Pseudo-elastic Window Usagementioning

confidence: 99%

“…In the recent literature, Shape memory alloys (SMA) [3,4] are suggested for damping in civil structures [5][6][7][8][9][10][11][12]. The singular properties of the SMA i.e., the shape memory effect, the pseudoelasticity, or the hysteresis cycle are due to a martensitic thermoelastic phase transformation between metastable phases.…”

Section: Introductionmentioning

confidence: 99%

“…Also, an evaluation of the long time diffusive contributions related to atomic order evolution is required [4,[12][13][14][15]. For instance, the devices need to be guaranteed after several decades under the action of summer-winter temperature effects.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Built in dampers for family homes via SMA: An ANSYS computation scheme based on mesoscopic and microscopic experimental analyses

Torra

Isalgué

Martorell

et al. 2007

Engineering Structures

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Section: The 5 Levels Of the Complete Modelmentioning

confidence: 99%

Section: Pseudo-elastic Window Usagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Built in dampers for family homes via SMA: An ANSYS computation scheme based on mesoscopic and microscopic experimental analyses

Torra

Isalgué

Martorell

et al. 2007

Engineering Structures

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“…In the passive approach, dampers, such as magneto-rheological dampers, fluid viscous dampers, particle dampers and tuned mass dampers (TMDs), have been utilized to suppress structural vibration and dissipate vibration energy of the controlled structures [14][15][16][17][18][19][20][21][22][23][24]. A typical TMD device mainly consists of a spring-mass system and a damper, with mainly the spring-mass-damper model usually being used to investigate the characteristics of TMDs [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Robustness of an Eddy Current-Tuned Mass Damper

Chen

et al. 2017

Applied Sciences

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Abstract:In this paper, an eddy current tuned mass damper (ECTMD) is utilized to control the vibration of a cantilever beam. The robustness of the ECTMD against frequency detuning is experimentally studied in cases of both free vibration and forced vibration. The natural frequency of the cantilever beam can be adjusted by changing the location of a lumped mass. For purposes of comparison with the ECTMD, the robustness of a tuned mass damper (TMD) is also studied. The experimental results in the free vibration case indicate that the ECTMD works well both in tuned and detuned situations, and the equivalent damping ratio of the cantilever beam equipped with the ECTMD is 2.08~5.91 times that of the TMD. However, the TMD only suppresses the free vibration effectively in the tuned situation. With forced vibration, the experimental results also demonstrate the robustness of the ECTMD in vibration suppression in detuned cases. On the other hand, the cantilever beam with TMD experiences 1.63~2.99 times the peak vibration of that of the ECTMD control.

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Seismic performance of benchmark base-isolated bridges with superelastic Cu-Al-Be restraining damping device

Zhang¹,

Hu²,

Zhu³

2009

Struct. Control Health Monit.

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This paper presents a simulation-based benchmark control study in which shape memory alloy (SMA)-based displacement restraining damping devices are proposed to control the seismic response of a full-scale three-dimensional seismically excited highway bridge. In this Phase II benchmark problem, the bridge is fully isolated at both the abutments and the central pier location using nonlinear hysteretic bearings with a lead core on the inside and an elastomer surrounding the lead core. The SMA restraining damping device is a passive control device employing superelastic Cu-Al-Be alloy wires as its core re-centering component, which restrains the base-isolated bridge from excessive displacement responses, especially under extreme earthquake events. In this benchmark study, a total of 20 such passive control devices are supposed to be installed at the isolation level between the deck and the isolators on bridge piers and center column at 10 locations, each location consisting of a single orthogonal pair to control the responses in both directions. The performance of the passive control devices is analyzed in terms of the performance indices in the benchmark problem definition at a variety of ambient environment temperatures at 23, 0, À25 and À501C, respectively. The results of this simulation-based benchmark control study show that the proposed passive control device can effectively reduce the excessive displacement responses and permanent bearing deformations of the benchmark base-isolated bridge subjected to strong ground motions, and temperature seems to have little effect on the performance of the superelastic Cu-Al-Be restraining damping device in bridge response control. 61) J 13 : Nor. bear. def. 0.59 (0.34) 1.25 (0.60) 0.24 (0.10) 0.86 (0.62) 0.20 (0.16) 0.31 (0.12) J 14 : Nor. ductility 1.38 (0.76) 1.20 (0.85) 0.86 (0.76) 1.16 (1.08) 0.54 (0.39) 0.87 (0.59) J 15 : Pk. con. force 0.00 (0.01) 0.00 (0.01) 0.00 (0.01) 0.01 (0.01) 0.01 (0.01) 0.00 (0.01) J 16 : Pk. stroke 0.80 (0.70) 0.91 (0.86) 0.37 (0.26) 0.82 (0.65) 0.58 (0.50) 0.44 (0.23) J 17 : Pk. power The values in bracket refer to sample passive MR damper case at room temperature given by Nagarajaiah et al. [27]. Y. ZHANG, X. HU AND S. ZHU 680

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SMA for Dampers in Civil Engineering

Cited by 29 publications

References 7 publications

Built in dampers for family homes via SMA: An ANSYS computation scheme based on mesoscopic and microscopic experimental analyses

Built in dampers for family homes via SMA: An ANSYS computation scheme based on mesoscopic and microscopic experimental analyses

Experimental Study on Robustness of an Eddy Current-Tuned Mass Damper

Seismic performance of benchmark base-isolated bridges with superelastic Cu-Al-Be restraining damping device

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