Purpose – The purpose of this paper is to study the different performance of circular, two-lobe and elliptical journal bearings by TEHD analysis. Design/methodology/approach – A complete 3D TEHD model of journal bearings is set up and applied to the lubricant performance calculation of the conventional circular, two-lobe and elliptical journal bearings. The finite difference method is employed to solve the THD model, and the thermo-elasto deformations on the pad are obtained by the finite element software ANSYS11.0. The data transfer between the THD model and ANSYS11.0 is carried out automatically by Interface Program. Findings – It is found that under the identical geometric parameters and operating condition, the circular journal bearing possesses the greatest magnitude of the maximum oil film pressure, the two-lobe one takes the second place and the elliptical one possesses the smallest magnitude. The thermo-elasto deformations on the pad is the same order of magnitude with the minimum film thickness. Practical implications – A complete 3D TEHD model made up of the THD model and ANSYS11.0 can be applied on journal bearings in practice applications. Originality/value – This paper set up a complete 3D TEHD model that is in common use for the lubricant performance analysis of circular and non-circular journal bearings.
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Huang et al. (2014) studied this question.
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