Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/346868
Type: Artigo
Title: Investigation on the influence of the cavitation boundaries on the dynamic behavior of planar mechanical systems with hydrodynamic bearings
Author: Daniel, Gregory Bregion
Machado, Tiago Henrique
Cavalca, Katia Lucchesi
Abstract: The characterization of lubricated revolute joints configures a topic of great interest in mechanisms and machines since there is a significant demand for its proper design in many applications. Therefore, this work proposes a solution for the evaluation of the hydrodynamic force components of the journal bearings obtained from the integration of the Reynolds equation for infinitely short bearings. The main difficulty in obtaining these hydrodynamic forces lies on adequately defining the boundary conditions of the Reynolds equation. Differently from the boundary conditions proposed in classical literature, this work presents an approach to determine the integration boundaries, i.e., the angular position in the bearing reference system where the pressure is null. Therefore, the hydrodynamic forces are calculated taking into account only the positive pressure. These angles are time dependent, and its evaluation is very important for a more accurate estimation of the hydrodynamic force components. The computer simulations are accomplished for different length–diameter ratios (L/D). From the global results, it can be concluded that the proposed approach is promising to efficiently represent the hydrodynamic conditions in bearings with L/D ratios up to 0.5
Subject: Hidrodinâmica
Country: Reino Unido
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.mechmachtheory.2015.11.019
Address: https://www.sciencedirect.com/science/article/pii/S0094114X1500302X
Date Issue: 2016
Appears in Collections:FEM - Artigos e Outros Documentos

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