TY - JOUR
T1 - Mathematical formulation of the film thickness in a multi-pad externally adjustable hydrodynamic bearing using the transformation technique
AU - Ganesha, A.
AU - Raghuvir, Pai
AU - Abdul Khader, S. M.
N1 - Publisher Copyright:
© 2021 - IOS Press. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Instability problem of a hydrodynamic plain journal bearing at higher speeds is conventionally resolved by using the non-circular bearings. High speed precision rotating shafts demands accurate positioning of the journal centres. A multi-pad adjustable bearing is a non-circular bearing, provides a fine-tuning option of the journal centre by continuously changing the bearing profile. In the present study, the bearing has a configuration of four bearing pads that are adjustable both in the radial and tilt directions. The fluid film thickness profile is conventionally obtained using the trigonometric relations, which has computational limitations, especially in multi-pad adjustable bearings. In this investigation, the film thickness profile of a multi-pad adjustable bearing is mathematically formulated using the transformation technique. The results obtained are compared with those available in the literature for a similar bearing. The observation shows that transformation technique eliminates the projection approximation error present in the conventional technique.
AB - Instability problem of a hydrodynamic plain journal bearing at higher speeds is conventionally resolved by using the non-circular bearings. High speed precision rotating shafts demands accurate positioning of the journal centres. A multi-pad adjustable bearing is a non-circular bearing, provides a fine-tuning option of the journal centre by continuously changing the bearing profile. In the present study, the bearing has a configuration of four bearing pads that are adjustable both in the radial and tilt directions. The fluid film thickness profile is conventionally obtained using the trigonometric relations, which has computational limitations, especially in multi-pad adjustable bearings. In this investigation, the film thickness profile of a multi-pad adjustable bearing is mathematically formulated using the transformation technique. The results obtained are compared with those available in the literature for a similar bearing. The observation shows that transformation technique eliminates the projection approximation error present in the conventional technique.
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U2 - 10.3233/JCM-200038
DO - 10.3233/JCM-200038
M3 - Article
AN - SCOPUS:85112231575
SN - 1472-7978
VL - 21
SP - 525
EP - 534
JO - Journal of Computational Methods in Sciences and Engineering
JF - Journal of Computational Methods in Sciences and Engineering
IS - 3
ER -