Modification of rotor modal properties based on structural changes in the stiffness of its bearings and shaft

The rotor structures are fundamental mechanical systems that realize the transfer of rotary motion in technical devices and systems. In some operating regimes, the rotor systems are often subjected to undesirable and damaging phenomena resulting in resonant state. The ability to prevent or reduce th...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-02, Vol.2712 (1), p.12022
Main Authors: Bucha, P, Rolník, L, Lovíšková, J, Naď, M
Format: Article
Language:English
Subjects:
Material properties
Mechanical systems
Rotor speed
Stiffness
Structural design
Online Access:Get full text
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Summary:The rotor structures are fundamental mechanical systems that realize the transfer of rotary motion in technical devices and systems. In some operating regimes, the rotor systems are often subjected to undesirable and damaging phenomena resulting in resonant state. The ability to prevent or reduce the level of unwanted rotor vibrations in the given operating mode is an important task in the process of structural design of rotor structures. In general, the dynamic properties of rotor systems depend on their spatial properties - geometric parameters and material properties, i.e. distribution of mass and stiffness properties of rotor structures. For the structural design of the rotor or its structural modification, which will allow the redistribution of its spatial properties (mass and stiffness), two approaches based on changing the bearing stiffness and also on the shaft stiffness are presented in this paper. The main goal for modifying the spatial properties of the rotor is to get the critical rotor speed out of the operating speed range.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2712/1/012022