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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EH23_020%2F0008528" target="_blank" >EH23_020/0008528: Inovativní technologie pro chytrou nízkoemisní mobilitu</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Engineering Proceedings

ISSN

—

e-ISSN

2673-4591

Svazek periodika

113

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105025730584