sliding. The sliding velocity is 6m/s and the bearing is s thickness is always three times the outlet film thickness bearing and Tellus 37 oil is supplied at an inlet tempera of the heat generated in the bearing is carried away by characteristics of the bearing (Pm, Q, F, t). Density is = 1.880 J/g-K. m

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A plane-inclined pad thrust bearing is 160mm wide and 40mm long in the direction of
sliding. The sliding velocity is 6m/s and the bearing is supported so that the inlet film
thickness is always three times the outlet film thickness. A load 18kN is carried by the
bearing and Tellus 37 oil is supplied at an inlet temperature of 40°C. Assuming that 80%
of the heat generated in the bearing is carried away by the oil, describe the operating
characteristics of the bearing (Pm, Q, F, t). Density is 875 kg/m³ and specific heat is c,
= 1.880 J/g-K.
Table 5.1 Variation of dimensionless coefficients p..Q. W and Ffor a wide hydrodynamic thrust bearing with film thickness ratio h, /h,
1.25
1.5
1.75
2.0
2.1889
2.25
2.5
2.75
3.0
3.25
3.5
3.75
4.0
K
0.25
0.5
0.75
1.0
1.1889
1.25
1.5
1.75
2.0
2.25
2.5
2.75
3.0
0.1333
0.2000
0.2338
0.2500
0.2555
0.2564
0.2571
0.2545
0.2500
0.2443
0.2381
0.2316 0.2250
0.5556
0.6000
0.6364
0.6667
0.6804
0.6923
0.7143
0.7333
0.7500
0.7647
0.7778
0.7895
0.8000
0.0884
0.1312
0.1511
0.1589
0.1602
0.1601
0.1577
0.1533 0.1479
0.1420
0.1360
0.1300
0.1242
0.9036
0.8437
0.8028 0.7726 0.7542 0.7488 0.7292 0.7122 0.6972
0.6836
0.6711
0.6594 0.6494
Transcribed Image Text:A plane-inclined pad thrust bearing is 160mm wide and 40mm long in the direction of sliding. The sliding velocity is 6m/s and the bearing is supported so that the inlet film thickness is always three times the outlet film thickness. A load 18kN is carried by the bearing and Tellus 37 oil is supplied at an inlet temperature of 40°C. Assuming that 80% of the heat generated in the bearing is carried away by the oil, describe the operating characteristics of the bearing (Pm, Q, F, t). Density is 875 kg/m³ and specific heat is c, = 1.880 J/g-K. Table 5.1 Variation of dimensionless coefficients p..Q. W and Ffor a wide hydrodynamic thrust bearing with film thickness ratio h, /h, 1.25 1.5 1.75 2.0 2.1889 2.25 2.5 2.75 3.0 3.25 3.5 3.75 4.0 K 0.25 0.5 0.75 1.0 1.1889 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0 0.1333 0.2000 0.2338 0.2500 0.2555 0.2564 0.2571 0.2545 0.2500 0.2443 0.2381 0.2316 0.2250 0.5556 0.6000 0.6364 0.6667 0.6804 0.6923 0.7143 0.7333 0.7500 0.7647 0.7778 0.7895 0.8000 0.0884 0.1312 0.1511 0.1589 0.1602 0.1601 0.1577 0.1533 0.1479 0.1420 0.1360 0.1300 0.1242 0.9036 0.8437 0.8028 0.7726 0.7542 0.7488 0.7292 0.7122 0.6972 0.6836 0.6711 0.6594 0.6494
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