SMA in Mitigation of Extreme Loads in Civil Engineering: Damping Actions in Stayed Cables

Vicenç Torra; Antonio Isalgue; Carlota Auguet; Guillem Carreras; Francisco C. Lovey; Patrick Terriault; Lamine Dieng

doi:10.4028/www.scientific.net/AMM.82.539

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 82SMA in Mitigation of Extreme Loads in Civil...

SMA in Mitigation of Extreme Loads in Civil Engineering: Damping Actions in Stayed Cables

Abstract:

Reliable use of Shape Memory Alloys (SMA) in mitigation of extreme load effects requires a deep study of the SMA behavior according to the necessities of the application. Damping the oscillations induced by one storm of three or four days with a strong wind and/or rain usually requires more than one million of working cycles. A SMA damper is checked in to two realistic cables of ELSA and of IFSTTAR. The measurements establish that the SMA damping device reduces drastically the oscillation amplitude. Technical suggestions for the preparation of the dampers built by several SMA wires of NiTi with 2.46 mm of diameter are included. The choice of appropriate length and the choice of the number of required SMA wires are suggested. Moreover, a suitable simulation by proprietary SMA routine inside ANSYS is included.

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Periodical:

Applied Mechanics and Materials (Volume 82)

Pages:

539-544

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.82.539

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Online since:

July 2011

Authors:

Vicenç Torra, Antonio Isalgue, Carlota Auguet, Guillem Carreras, Francisco C. Lovey, Patrick Terriault, Lamine Dieng

Keywords:

ANSYS Simulation, Damping, Fatigue Life, Passive Systems, Shape Memory Alloy Actuator, Stayed Cables Damping

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References

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