Application of polynomial chaos expansions to analytical models of friction oscillators

Zhang, Z; Oberst, S; Lai, JCS

Application of polynomial chaos expansions to analytical models of friction oscillators

Zhang, Z Oberst, S

Lai, JCS

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Publication Type:: Conference Proceeding
Citation:: Annual Conference of the Australian Acoustical Society 2013, Acoustics 2013: Science, Technology and Amenity, 2013, pp. 408 - 414
Issue Date:: 2013-01-01

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Field	Value	Language
dc.contributor.author	Zhang, Z	en_US
dc.contributor.author	Oberst, S https://orcid.org/0000-0002-1388-2749	en_US
dc.contributor.author	Lai, JCS	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	Annual Conference of the Australian Acoustical Society 2013, Acoustics 2013: Science, Technology and Amenity, 2013, pp. 408 - 414	en_US
dc.identifier.isbn	9781632662682	en_US
dc.identifier.uri	http://hdl.handle.net/10453/121089
dc.description.abstract	Despite past substantial research efforts, the prediction of brake squeal propensity remains a largely unresolved problem. The standard practice to predict the brake squeal propensity is to analyse dynamic instabilities using the complex eigenvalue analysis. However, it is well known that not every predicted unstable vibration mode will lead to squeal and vice-versa. Owing to nonlinearity and problem complexity (e.g. operating conditions), treating brake squeal with uncertainty seems appealing. Another indicator of brake squeal propensity, not often used, is based on negative dissipated energy. In this study, uncertainty analysis induced by polynomial chaos expansions is examined for 1-dof and 4-dof friction models. Results are compared with dissipated energy calculations and standard complex eigenvalue analysis. The potential of this approach for the prediction of brake squeal propensity is discussed. © (2013) by the Australian Acoustical Society.	en_US
dc.relation.ispartof	Annual Conference of the Australian Acoustical Society 2013, Acoustics 2013: Science, Technology and Amenity	en_US
dc.title	Application of polynomial chaos expansions to analytical models of friction oscillators	en_US
dc.type	Conference Proceeding
utslib.for	010204 Dynamical Systems in Applications	en_US
utslib.for	091301 Acoustics and Noise Control (excl. Architectural Acoustics)	en_US
utslib.for	091304 Dynamics, Vibration and Vibration Control	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

Despite past substantial research efforts, the prediction of brake squeal propensity remains a largely unresolved problem. The standard practice to predict the brake squeal propensity is to analyse dynamic instabilities using the complex eigenvalue analysis. However, it is well known that not every predicted unstable vibration mode will lead to squeal and vice-versa. Owing to nonlinearity and problem complexity (e.g. operating conditions), treating brake squeal with uncertainty seems appealing. Another indicator of brake squeal propensity, not often used, is based on negative dissipated energy. In this study, uncertainty analysis induced by polynomial chaos expansions is examined for 1-dof and 4-dof friction models. Results are compared with dissipated energy calculations and standard complex eigenvalue analysis. The potential of this approach for the prediction of brake squeal propensity is discussed. © (2013) by the Australian Acoustical Society.

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http://hdl.handle.net/10453/121089