Open AccessStudy on the temperature and strain fields in gas foil bearings – measurement method and numerical simulations
Author(s) -
Paweł Zdziebko,
Adam Martowicz
Publication year - 2021
Publication title -
eksploatacja i niezawodność
Language(s) - English
Resource type - Journals
eISSN - 2956-3860
pISSN - 1507-2711
DOI - 10.17531/ein.2021.3.15
Subject(s) - foil bearing , foil method , bearing (navigation) , work (physics) , finite element method , air bearing , thermal , mechanical engineering , materials science , structural engineering , mechanics , engineering , composite material , computer science , thermodynamics , physics , slider , artificial intelligence
Gas foil bearings belong to the group of slide bearings and are used in devices in which operation at high rotational speeds of the shafts are of key importance, e.g., in gas turbines. The air film developed on the surface of the bearing’s top foil allows this structural component to be separated from the shaft. This ensures a non-contact operation of the bearing. In the case of the mentioned type of bearings, their resultant operational properties are influenced by both thermal and mechanical phenomena. The current work presents a model of a gas foil bearing developed making use of the Finite Element Method. The model takes into account thermomechanical couplings which are necessary for the correct simulation of the operation of physical components of the modeled system. The paper reports the results of numerical analyzes conducted for the elaborated model as well as the relevant conclusions concerning thermomechanical couplings present in gas foil bearings. The method for the experimental identification of the temperature and strain fields in the bearing’s top foil proposed to validate the numerical model is also presented.