Engineering Mechanics

Proceedings Vol. 30 (2024)

ENGINEERING MECHANICS 2024

Copyright © 2024 Brno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno

 

Hajžman M., Bulín R., Byrtus M., Dyk Š., Polach P., Rendl J., Smolík L.
pages 18 - 23, full text

This paper introduces the specific issues of dynamic behaviour and the possibilities of computational modelling in rotating systems. Initially, it revisits the basic properties of rotating systems supported by journal bearings. Subsequently, it explores the instabilities associated with various types of journal bearings. Three intriguing industrial applications are then presented. The first application explores the nonlinear dynamics of high-speed turbochargers, focusing on their specific floating ring bearings. Computational results are compared with experimentally obtained data for validation. Conversely, the second application concerns the dynamics of large turbine rotors used in power plants. Particular attention is given to addressing challenges related to stator and foundation considerations in computational models. Lastly, the third application aims to model a specific vertical rotor immersed in fluid and operating under extreme temperatures.

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All papers were reviewed by members of the scientific committee.