Abstract
This paper presents the effect of eccentricity and surface roughness on the probabilistic performance of two axial groove hydrodynamic journal bearing. In general, it is difficult to quantify experimentally the variabilities involved in dynamic responses of the hydrodynamic bearing due to the randomness involved in surface asperity and eccentricity ratio. The deterministic models available for the analysis of the bearings are not capable to include such uncertainties. Thus, the focus of the study is to quantify such uncertainties on the performance of a two axial grooved journal bearing. To simulate the variabilities of the stochastic variables, Monte Carlo simulation (MCS) is carried out. The steady-state and dynamic coefficients are obtained by solving the Reynolds equation using a surrogate-based finite difference method. The moving least square (MLS) method is used as the surrogate model to increase the computational efficiency of MCS.
Issue Section:
Research Papers
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