Simulations of the Nonlinear Dynamic Response of a Turbocharger on Foil-Air Bearings with Focus on Unbalance Excitation

Philip Bonello

Simulations of the Nonlinear Dynamic Response of a Turbocharger on Foil-Air Bearings with Focus on Unbalance Excitation

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abstract

An efficient computational technique for the nonlinear dynamic response of generic machinery supported on foil-air bearings (FABs) has recently been proposed, enabling the simultaneous solution of the coupled rotor, air film and foil equations. This technique is applied here to simulate the unbalance response of a small commercial turbocharger that currently runs on oil-lubricated floating ring bearings (FRBs) and is slightly adapted to run on FABs. The predicted results reveal notable similarities with the FRB installation. Moreover, despite the stabilisation of the static equilibrium configuration, the operating response at industrial unbalance levels will typically exhibit sub-synchronous activity that is akin to self-excited vibration but is proven to be unbalance-driven.

Original language	English
Title of host publication	VIRM 11 - Vibrations in Rotating Machinery
Place of Publication	London
Publisher	Institution of Mechanical Engineers
ISBN (Print)	978-0-9572374-8-3
Publication status	Published - 15 Sept 2016
Event	Vibrations in Rotating Machinery-VIRM 11 - Schuster Building, The University of Manchester, Manchester, United Kingdom Duration: 13 Sept 2016 → 16 Sept 2016 http://events.imeche.org/ViewEvent?code=C6226

Conference

Conference	Vibrations in Rotating Machinery-VIRM 11
Abbreviated title	VIRM 11
Country/Territory	United Kingdom
City	Manchester
Period	13/09/16 → 16/09/16
Internet address	http://events.imeche.org/ViewEvent?code=C6226

Access to Document

Bonello_VIRM11_v9Accepted author manuscript, 943 KB

Non-Linear Dynamic Analysis of Oil-Free Turbomachinery
Bonello, P.
1/06/11 → 31/05/14
Project: Research

Cite this

@inproceedings{2401de7a1039478f84c38b406e9e3ad2,

title = "Simulations of the Nonlinear Dynamic Response of a Turbocharger on Foil-Air Bearings with Focus on Unbalance Excitation",

abstract = "An efficient computational technique for the nonlinear dynamic response of generic machinery supported on foil-air bearings (FABs) has recently been proposed, enabling the simultaneous solution of the coupled rotor, air film and foil equations. This technique is applied here to simulate the unbalance response of a small commercial turbocharger that currently runs on oil-lubricated floating ring bearings (FRBs) and is slightly adapted to run on FABs. The predicted results reveal notable similarities with the FRB installation. Moreover, despite the stabilisation of the static equilibrium configuration, the operating response at industrial unbalance levels will typically exhibit sub-synchronous activity that is akin to self-excited vibration but is proven to be unbalance-driven.",

author = "Philip Bonello",

year = "2016",

month = sep,

day = "15",

language = "English",

isbn = "978-0-9572374-8-3",

booktitle = "VIRM 11 - Vibrations in Rotating Machinery",

publisher = "Institution of Mechanical Engineers",

address = "United Kingdom",

note = "Vibrations in Rotating Machinery-VIRM 11, VIRM 11 ; Conference date: 13-09-2016 Through 16-09-2016",

url = "http://events.imeche.org/ViewEvent?code=C6226",

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TY - GEN

T1 - Simulations of the Nonlinear Dynamic Response of a Turbocharger on Foil-Air Bearings with Focus on Unbalance Excitation

AU - Bonello, Philip

PY - 2016/9/15

Y1 - 2016/9/15

N2 - An efficient computational technique for the nonlinear dynamic response of generic machinery supported on foil-air bearings (FABs) has recently been proposed, enabling the simultaneous solution of the coupled rotor, air film and foil equations. This technique is applied here to simulate the unbalance response of a small commercial turbocharger that currently runs on oil-lubricated floating ring bearings (FRBs) and is slightly adapted to run on FABs. The predicted results reveal notable similarities with the FRB installation. Moreover, despite the stabilisation of the static equilibrium configuration, the operating response at industrial unbalance levels will typically exhibit sub-synchronous activity that is akin to self-excited vibration but is proven to be unbalance-driven.

AB - An efficient computational technique for the nonlinear dynamic response of generic machinery supported on foil-air bearings (FABs) has recently been proposed, enabling the simultaneous solution of the coupled rotor, air film and foil equations. This technique is applied here to simulate the unbalance response of a small commercial turbocharger that currently runs on oil-lubricated floating ring bearings (FRBs) and is slightly adapted to run on FABs. The predicted results reveal notable similarities with the FRB installation. Moreover, despite the stabilisation of the static equilibrium configuration, the operating response at industrial unbalance levels will typically exhibit sub-synchronous activity that is akin to self-excited vibration but is proven to be unbalance-driven.

M3 - Conference contribution

SN - 978-0-9572374-8-3

BT - VIRM 11 - Vibrations in Rotating Machinery

PB - Institution of Mechanical Engineers

CY - London

T2 - Vibrations in Rotating Machinery-VIRM 11

Y2 - 13 September 2016 through 16 September 2016

ER -

Simulations of the Nonlinear Dynamic Response of a Turbocharger on Foil-Air Bearings with Focus on Unbalance Excitation

Abstract

Conference

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Projects

Non-Linear Dynamic Analysis of Oil-Free Turbomachinery

Cite this