Non-Iterative Finite Element Scheme for Combined Annular-Thrust Porous Aerostatic Bearings Analysis

Khan, Polina V.; Hwang, Pyung

doi:10.1115/ijtc2012-61088

Cited by 1 publication

(2 citation statements)

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“…Analysis is also done using the finitedifference method (Silveira et al, 2010;Majumdar, 1976) and the finite-element method [4,8] (Tian, 1998;Luong et al, 2004). Assuming one-dimensional flow in the porous bulk, the equation for the bulk can be integrated numerically, which reduces the dimension of the problem and, therefore, the computation time (Silveira et al, 2010;Tian, 1998;Loung et al, 2004;Khan and Hwang, 2012). Khan and Hwang (2012) developed a fast finite element scheme for analyzing porous aerostatic bearings and showed that the radial load-carrying capacity was limited by the pressure growth around the shaft.…”

Section: Introductionmentioning

confidence: 99%

“…Assuming one-dimensional flow in the porous bulk, the equation for the bulk can be integrated numerically, which reduces the dimension of the problem and, therefore, the computation time (Silveira et al, 2010;Tian, 1998;Loung et al, 2004;Khan and Hwang, 2012). Khan and Hwang (2012) developed a fast finite element scheme for analyzing porous aerostatic bearings and showed that the radial load-carrying capacity was limited by the pressure growth around the shaft. However, there has been no report on the effect of the arc on the annular-thrust to increase the load-carrying capacity.…”

Section: Introductionmentioning

confidence: 99%

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The effect of the arc on annular-thrust aerostatic porous bearings

Khan

Segu

Hwang

2017

ILT

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Purpose Aerostatic porous bearings are important for guide rails and spindles. It is well-known that flow restrictors made of porous materials offer major advantages over conventional restrictors in such bearings, including design and manufacturing, load-carrying capacity, stiffness, damping and dynamic stability. Thus, this work numerically investigates the effect of the arc on a new combined annular-thrust aerostatic porous bearing. Design/methodology/approach The static characteristics of an annular-thrust aerostatic porous bearing were studied using a fast finite element scheme. The pressure distribution, radial load and thrust load were analyzed as functions of the arc, permeability and eccentricity. Findings The results reveal that the radial load achieves maximal values at an optimal arc value between 200 and 300, and the thrust load increases monotonically with increasing arc. Originality/value This work developed a new combined annular-thrust aerostatic porous bearing to investigate the effect of arc on the annular-thrust aerostatic porous bearings to increase the load-carrying capacity.

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