A systematic analysis of the dynamic behavior of a gear-bearing systemwith nonlinear suspension, couple-stress fluid flow effect, nonlinear oil-film force, and nonlinear gear mesh force is performed in the present study. The dynamic orbits of the system are observed using bifurcation diagrams plotted using the dimensionless rotational speed ratio as a control parameter. The onset of chaotic mot...

A silicon nitride ceramic bearing has good self-lubricating characteristics. It still a operational status under the condition of lack oil. However, temperature distribution during its operation is unclear. To clarify thermal full-ceramic ball conditions, changing trend rolling friction between elements and channels with different accuracies analyzed using testing machine. The heat generation m...

A rotor-journal bearing system for a twin rotary compressor has been nlliDerically analyzed to estimate the reliability and to optimize the bearing design. For rotary compressors, large dynamic loads act on the rotor. They are unbalanced forces due to eccentric rotation parts and gas forces induced by the difference in pressure between compression and suction gases. In such a case, the rotor-jo...

Polymers with self-lubricating properties have been employed in various applications as bearing components and tribological surfaces, particularly where the use of liquid lubricant is infeasible, such space-related applications. This study reports on solutions for extreme temperature ranging from ?196 to 300 °C, which simulates operating conditions that materials space will encounter. Tribologi...

Supersonic Laser Deposition (SLD) is a coating and fabrication process combining cold spray (CS) with laser heating of the deposition zone. increases deformation on impact, improving bonding for given particle velocity, eliminating need to use helium while retaining advantages CS; solid-state deposition, low oxidation high build rate (≤ 10 kg/hr). Although solid lubricants offer over liquid lub...

The paper aims to obtain the expression of velocity lubricating fluid in hydrodynamic journal bearings by analytical method. In classical short-bearing theory, flow was studied ignoring effect centrifugal force film. However, self-oscillation shaft high-power motors does not follow rules lubrication theory. To explain this phenomenon, a modified form Reynolds equation, which influence lubricant...

Abstract The aim of this study is to consider the effect pressure on viscosity lubricating oil in adopted model hydrodynamic lubrication and calculated flow parameters operating a conical slide bearing. numerical analysis consisted solving Reynolds type equation for process stationary lubrication.