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Titre: | A reduced-order method with PGD for the analysis of dynamically loaded journal bearing |
Auteur(s): | Megdoud, Abdelhak Manser, Belkacem Belaidi, Idir Bakir, Farid Khelladi, Sofiane |
Mots-clés: | Hydrodynamic lubrication Journal bearings Dynamical behavior Reynolds equation roper generalized decomposition Full discretized model |
Date de publication: | 2022 |
Collection/Numéro: | Comptes Rendus Mécanique/ Vol. 350(2022);pp. 361-390 |
Résumé: | Machine component design has become a prominent topic for researchers in recent years. The
analysis of bearing systems has received considerable attention in order to avoid detrimental contact.
Among the most important studies in this area are the transient problems of journal bearings, which
are usually performed by coupling the Reynolds equation with the motion equations. Many techniques
have been presented in the literature and are still being explored to ensure the accurate findings and
efficient solution prediction of unsteady state Reynolds equation. In this paper, the Proper Generalized
Decomposition (PGD) approach is expanded for the analysis of the lubricant behavior of dynamically loaded
journal bearing considering Swift-Stieber boundary conditions. The PGD model is applied in this problem,
seeking the approximate solution in its separated form of the partial differential Reynolds equation at each
time step during the load applied cycle employing the alternating direction strategy. Compared to the
classical resolution, the PGD solution has a considerably low computational cost. To verify the accuracy
and efficiency of this approach, three cases have been considered, infinitely short, infinitely long and finite
journal bearings under the dynamic load. The results of the suggested methodology when compared to the
full discretized model (FDM) show that, the new scheme is more efficient, converges quickly, and gives the
accurate solutions with a very low CPU time consumption. |
URI/URL: | https://doi.org/10.5802/crmeca.124 http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/12020 |
Collection(s) : | Publications Internationales
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