Investigation on the influence of the cavitation boundaries on the dynamic behavior of planar mechanical systems with hydrodynamic bearings

摘要: Abstract The characterization of lubricated revolute joints configures a topic great interest in mechanisms and machines since there is significant demand for its proper design many applications. Therefore, this work proposes solution the evaluation hydrodynamic force components journal bearings obtained from integration Reynolds equation infinitely short bearings. main difficulty obtaining these forces lies on adequately defining boundary conditions equation. Differently proposed classical literature, presents an approach to determine boundaries, i.e., angular position bearing reference system where pressure null. are calculated taking into account only positive pressure. These angles time dependent, very important more accurate estimation components. computer simulations accomplished different length–diameter ratios (L/D). From global results, it can be concluded that promising efficiently represent with L/D up 0.5.