An improved computational strategy for vibration-proof structures equipped with nano-enhanced viscoelastic devices
An improved computational strategy for vibration-proof structures equipped with nano-enhanced viscoelastic devices
Viscoelastic damping devices are effective in mitigating vibrations experienced by Civil Engineering structures subjected to natural actions, such as earthquakes, wind gusts or ocean waves. In this paper, an efficient computational framework for non-classically damped viscoelastic structures is proposed, allowing rheological information on nano-reinforced elastomeric devices to be incorporated in the time-domain dynamic analysis of structures equipped with such components. For this purpose, the Generalized Maxwell (GM) model and the Laguerre’s polynomial approximation (LPA) can be effectively adopted to represent the relaxation function of the viscoelastic materials, leading to an enlarged state-space model. It is also shown that these models can be used beyond the linear range, provided that the strain-dependent values of their mechanical parameters are identified.
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Palmeri, Alessandro
f1985cb5-a5ef-44fb-ac6c-19041e468a10
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Palmeri, Alessandro
f1985cb5-a5ef-44fb-ac6c-19041e468a10
Ntotsios, Evangelos and Palmeri, Alessandro
(2012)
An improved computational strategy for vibration-proof structures equipped with nano-enhanced viscoelastic devices.
15WCEE: 15th World Conference on Earthquake Engineering, Lisbon, Portugal.
24 - 28 Sep 2012.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Viscoelastic damping devices are effective in mitigating vibrations experienced by Civil Engineering structures subjected to natural actions, such as earthquakes, wind gusts or ocean waves. In this paper, an efficient computational framework for non-classically damped viscoelastic structures is proposed, allowing rheological information on nano-reinforced elastomeric devices to be incorporated in the time-domain dynamic analysis of structures equipped with such components. For this purpose, the Generalized Maxwell (GM) model and the Laguerre’s polynomial approximation (LPA) can be effectively adopted to represent the relaxation function of the viscoelastic materials, leading to an enlarged state-space model. It is also shown that these models can be used beyond the linear range, provided that the strain-dependent values of their mechanical parameters are identified.
Text
WCEE2012_4229_final.pdf
- Accepted Manuscript
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e-pub ahead of print date: September 2012
Venue - Dates:
15WCEE: 15th World Conference on Earthquake Engineering, Lisbon, Portugal, 2012-09-24 - 2012-09-28
Organisations:
Dynamics Group
Identifiers
Local EPrints ID: 372222
URI: http://eprints.soton.ac.uk/id/eprint/372222
PURE UUID: 0f926a41-0453-47b4-9c02-4e940f3ef0ed
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Date deposited: 04 Dec 2014 13:39
Last modified: 15 Mar 2024 03:48
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Contributors
Author:
Alessandro Palmeri
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