An Advanced Approach for the Analysis of the Rotor Dynamics of a Ball Bearing Turbocharger

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0199312" target="_blank" >RIV/00216305:26210/26:0199312 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/engproc2025113021" target="_blank" >https://doi.org/10.3390/engproc2025113021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/engproc2025113021" target="_blank" >10.3390/engproc2025113021</a>

Result language

angličtina

Original language name

An Advanced Approach for the Analysis of the Rotor Dynamics of a Ball Bearing Turbocharger

Original language description

Turbochargers operate under highly transient conditions, which impose significant mechanical and thermal loads on their rotating components. When supported by ball bearings combined with squeeze film dampers, the rotor system exhibits complex nonlinear dynamics that can critically affect bearing performance and service life. This study investigates the dynamic behaviour of ball-bearing-supported turbocharger rotors, focusing on lubrication conditions that reflect transient operating conditions. A high-fidelity computational model was developed to simulate multibody rotor dynamics, incorporating finite element-based flexible bodies and elastohydrodynamic lubrication (EHL) submodels to represent the contacts within the ball bearings. Validation of the simulation results against experimental data revealed that rotor vibrations significantly influence EHL contact, potentially leading to raceway damage. Additionally, differences in bearing loading between the inner and outer raceways, as well as between the compressor and turbine side bearings, were observed due to bearing clearance effects.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/EH23_020%2F0008528" target="_blank" >EH23_020/0008528: Innovative Technologies for Smart Low Emission Mobilities</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Engineering Proceedings

ISSN

—

e-ISSN

2673-4591

Volume of the periodical

113

Issue of the periodical within the volume

21

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-105025730584