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Characterization of non-linear bearings using the Hilbert-Huang transform
Author(s)
Date Issued
2015-04
Date Available
2015-05-14T15:38:16Z
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.
Sponsorship
University College Dublin
Other Sponsorship
PhD in Sustainable Development Programme at University College Dublin (Ireland)
Type of Material
Journal Article
Publisher
Sage Publications
Journal
Advances in Mechanical Engineering
Volume
7
Issue
4
Start Page
1
End Page
13
Copyright (Published Version)
2015 the authors
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
File(s)
Name
Gonzalez_Hussein_2015_Characterization_of_nonlinear_bearings_using_the_HHT.pdf
Size
3.52 MB
Format
Owning collection
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