| Issue |
MATEC Web of Conferences
Volume 16, 2014
CSNDD 2014 - International Conference on Structural Nonlinear Dynamics and Diagnosis
|
|
|---|---|---|
| Article Number | 01004 | |
| Number of page(s) | 2 | |
| Section | New vibration absorbers and control devices: Piezo-electric systems, energy harvesting and nonlinear energy sinks | |
| DOI | https://doi.org/10.1051/matecconf/20141601004 | |
| Published online | 01 September 2014 | |
A new vibration absorber based on the hysteresis of multi-configuration NiTiNOL-steel wire ropes assemblies
Dipartimento di Ingegneria Strutturale e Geotecnica, Sapienza University of Rome, Rome, Italy
a e-mail: biagio.carboni@uniromal.it
b e-mail: walter.lacarbonara@uniromal.it
A new vibration absorber based on the restoring forces of NiTiNOL and mixed NiTiNOL-steel wire ropes subject to flexural and coupled tensile-flexural states is presented. The peculiar hysteresis of the device is due to the simultaneous presence of interwire friction and phase tranformations. An extension of the Bouc-Wen model is proposed to fit the experimental force-displacement cycles by employing the Differential Evolutionary optimization algorithm. The genetic-like optimization is carried out both for the constitutive identification and for the design of the vibration absorber. The effectiveness of the device is proved experimentally by a series of shaking table tests on a multi-story scale building.
© Owned by the authors, published by EDP Sciences, 2014
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