Engineering & Technologies 3 (2015 8) 270-282 ~ ~ ~ УДК 628.822 Fluid Dynamic Bearings: Modelling of Elastic Deformations Viktor A. Ivanova* Nikolai V. Erkaeva,b , and Daniel Langmayrc aSiberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia bInstitute of Computational Modelling SB RAS 50/44 Akademgorodok, Krasnoyarsk, 660036, Russia c ANSYS Germany GmbH Staudenfeldweg 12, Otterfi ng, 83624, Germany Received 02.03.2015, received in revised form 27.03.2015, accepted 07.04.2015 This article deals with a new approach for calculation of self-consistent pressure distribution and surface defl ection for a lubricated journal bearing. <...> This approach is based on the numerical solution of the 2-D Reynolds’ equation for the lubrication layer, numerical calculation of the surface deformations by the 3-D ANSYS package and Fourier series expansion for the compliance matrix. <...> A simple analytical approximation is found for the obtained compliance matrix, which can be used for heavy loaded journal bearings. <...> The compliance matrix is implemented into the iterative procedure for calculation of self-consistent pressure distribution and surface defl ection in the contact zone. <...> All rights reserved * Corresponding author E-mail address: Vintextrim@yandex.ru # 270 # Viktor A. Ivanov, Nikolai V. Erkaev… Fluid Dynamic Bearings: Modelling of Elastic Deformations Гидродинамический подшипник скольжения: моделирование упругих деформаций В. <...> Introduction Hydrodynamic lubrication theory is a commonly used tool for calculating and designing fl uid dynamic journal bearings, which are important parts of various mechanisms and vehicles. <...> Therefore elastic effects were incorporated into the lubrication theory, and the so called elastic hydrodynamic approach was developed, which considers both lubricant fl ow and surface deformations caused by enhanced pressure in the lubricant fi lm [5]. <...> In this approach, a key problem is to fi nd a relationship between lubricant pressure distributions and surface deformations. <...> The main constructive elements of a fl uid dynamic bearing are shaft (journal), lubricant fi lm, sleeve and housing. <...> Usually housing material is more rigid compared to that of a sleeve. <...> This is the reason why deformations of the housing are often neglected, and the sleeve deformations are used to be taken <...>