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Computational modelling of the low-profile flexible support of the pad of journal bearing
Kudláčová, Martina ; Pavlík, Ondřej (oponent) ; Pokorný, Jan (vedoucí práce)
Aerodynamic tilting pad journal bearings are currently one of the most widely used bearing types in high-speed rotary devices. In order to ensure better rotor stability under harsh operating conditions, research is underway on a new type of aerodynamic bearings with flexible support of tilt pads. The first chapters of this thesis are focused on an overview of bearing theory with a focus on aerodynamic bearings. The thesis presents the current state of research in the field of aerodynamic foil bearings and aerodynamic tilting pad journal bearings with an emphasis on pad support options. The aim of the final thesis is to determine the geometry of the low-profile flexible support of the pads for a specified bearing using computational modeling. A computational model was created, the results of which were verified experimentally using the method of digital image correlation (DIC). A parametric study was carried out using a computational model which allowed a comprehensive view of the issue of the dependence of the support parameters of the segment on its force and stiffness. Based on the results of the parametric study, the geometry of the low-profile flexible support of the pads for the specified bearing was determined.

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