Characterization of non-linear bearings using the Hilbert-Huang transform

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Title: Characterization of non-linear bearings using the Hilbert-Huang transform
Authors: González, Arturo
Aied, Hussein
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Date: Apr-2015
Abstract: Changes in the performance of bearings can significantly vary the distribution of internal forces and moments in a structure as a result of environmental or operational loads. The response of a bearing has been traditionally idealized using a linear model but a non-linear representation produces a more accurate picture at the expense of modelling complexity and computational time. In this article, a lead rubber bearing is idealized using the hysteretic Bouc–Wen model. The Hilbert–Huang transform is then employed to characterize the features of the non-linear system from the instantaneous frequencies of the bearing response to a time-varying force. Instantaneous frequencies are also shown to be a useful tool in detecting sudden damage to the bearings simulated by a reduction in the effective stiffness of the force-deformation loop.
Funding Details: University College Dublin
Type of material: Journal Article
Publisher: Sage Publications
Copyright (published version): 2015 the authors
Keywords: Bouc-WenElastomeric bearingsNonlinear structural dynamicsHilbert-Huang transform
DOI: 10.1177/1687814015582120
Language: en
Status of Item: Peer reviewed
Appears in Collections:Critical Infrastructure Group Research Collection
Earth Institute Research Collection
Civil Engineering Research Collection

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