MATEC Web of Conferences
Volume 16, 2014CSNDD 2014 - International Conference on Structural Nonlinear Dynamics and Diagnosis
|Number of page(s)||2|
|Section||New vibration absorbers and control devices: Piezo-electric systems, energy harvesting and nonlinear energy sinks|
|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 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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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