Experimental determination of dynamic characteristics of the impeller-bearing-housing system of ventrassist™ blood pump

Zhang, N; Chung, M; Tansley, GD

Experimental determination of dynamic characteristics of the impeller-bearing-housing system of ventrassist™ blood pump

Zhang, N

Chung, M Tansley, GD

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Publication Type:: Conference Proceeding
Citation:: 4th Australasian Congress on Applied Mechanics, ACAM 2005, 2005, pp. 317 - 322
Issue Date:: 2005-12-01

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Field	Value	Language
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044	en_US
dc.contributor.author	Chung, M	en_US
dc.contributor.author	Tansley, GD	en_US
dc.date.issued	2005-12-01	en_US
dc.identifier.citation	4th Australasian Congress on Applied Mechanics, ACAM 2005, 2005, pp. 317 - 322	en_US
dc.identifier.isbn	9781627481274	en_US
dc.identifier.uri	http://hdl.handle.net/10453/7108
dc.description.abstract	This paper presents an experimental investigation of the dynamic coeficients of the hydrodynamic bearing of the rotary blood pump for various pump speeds. A special test rig was developed to enable the measurements of pump housing absolute displacement and the impeller displacements relative to the housing to be taken simultanuously during the operation of the pump. From the measured decaying sine wave displacement, the natural frequency, damping and stiffness coefficients of the impeller-bearing-housing system were determined. Results indicate that stiffness and damping coefficients increased as flow rate and pump speed increased, representing an increase in stability with these changing conditions. © Institute of Materials Engineering Australasia Ltd 2005.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP0347953R1
dc.relation.ispartof	4th Australasian Congress on Applied Mechanics, ACAM 2005	en_US
dc.title	Experimental determination of dynamic characteristics of the impeller-bearing-housing system of ventrassist™ blood pump	en_US
dc.type	Conference Proceeding
utslib.for	0913 Mechanical Engineering	en_US
dc.location.activity	Melbourne, Australia	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
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

This paper presents an experimental investigation of the dynamic coeficients of the hydrodynamic bearing of the rotary blood pump for various pump speeds. A special test rig was developed to enable the measurements of pump housing absolute displacement and the impeller displacements relative to the housing to be taken simultanuously during the operation of the pump. From the measured decaying sine wave displacement, the natural frequency, damping and stiffness coefficients of the impeller-bearing-housing system were determined. Results indicate that stiffness and damping coefficients increased as flow rate and pump speed increased, representing an increase in stability with these changing conditions. © Institute of Materials Engineering Australasia Ltd 2005.

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http://hdl.handle.net/10453/7108