Effect of Load Direction, Preload, Clearance Ratio, and Oil Flow on the Perfonmance of a 200 mm Journal Pad Bearing

Recent thermohydrodynamic analyses and designs of thick-film bearings

“…In the second paper [11], Simmons and Lawrence presented similar experimental results in the case of offset pivot pads, while the pads in the first paper [10] were centre pivoted. They found that the maximum pad surface temperatures were lower by 10±20 8C than those for the centre-pivoted pad (Fig.…”

“…Basri and Gethin found that the pad surface temperatures for the tilted bearing were lower than those for the other two bearings, that the maximum pad surface temperatures increased monotonically with increasing load at constant speeds and also that the maximum temperature was affected by the load direction. Simmons and Dixon [10] and Simmons and Lawrence [11] conducted experiments on the THD performance of five-pad tilting-pad journal bearings of 200 mm diameter with sealed (flooded) lubrication under practical operating conditions for high-speed gearbox bearings. They presented a large amount of performance data over a wide range of operating conditions.…”

“…Fig.4Maximum pad temperature versus speed for configuration 1 (diametric clearance, 0.23 mm; pre-load ratio, 0.52; load on pad). (From reference[10])…”

Effect of Change in Radial Clearance on Pressure Variation of Fluid in Hydrodynamic Journal Bearing

“…The behavior of these performance parameters at different relative clearance in circumferential and axial direction is scrutinized. Simmsons et al [13] showed that the results for the large clearance configurations did not show the dramatic variation in maximum bearing temperature associated with a transition from laminar to turbulent cooling that was found for standard clearance cases. Papadopoulos et al [14] theoretically presented the identification of clearances and stability analysis for a rotor journal bearing system using response measurements of the rotor at a particular point i.e the midpoint of the rotor.…”

Effect of the load direction on non-nominal five-pad tilting-pad journal bearings

“…They observed that the variation in the load direction has a strong effect on the bearing performance. Simmons et al in [14] investigated the effect of the load direction on the performances of a 200 mm diameter TPJB. In particular, they concluded that the load direction had a substantial effect on the maximum pad temperature.…”