Engineering Tribology 2E Episode 2 ppsx

... Design D (mm) 170 150 B/D 1.0 1.4 p (N/mm 2 ) 3.0 2. 8 v (m/s) 139 (167) 122 (146) T max (°C) 1 32 (141) 121 (130) Values in parentheses refer to overspeed 120 %. m p , m G = Poisson ratio for pinion ... speed: n = 6380/15,574 rpm Overspeed 120 %: n = 7656/18,689 rpm Nominal pitch line velocity: v = 20 0 m/s Overspeed plv.: v = 24 0 m/s Center distance: a = 422 mm Two sets of gearwheel...

Ngày tải lên: 21/07/2014, 16:22

... 385-3 92 375-385 370-380 360-375 320 -365 320 -340 28 0-3 10 29 0-31 8 28 5 -29 0 24 0 -27 5 20 0 -24 8 1 60 -24 1 21 4 130 -23 4 70 -20 0 196 193 -21 4 196 -20 7 190 -20 0 20 0 170-1 90 150-1 86 1 72 ... 20 Engineering Materials 1 to Time t (year) Fig. 2. 2. The exponentially rising consumption of materials. r -C 100 (2. 2) where Co is the...

Ngày tải lên: 13/08/2014, 08:21

... interest in [g/cm 3 ]. 10 00 500 200 10 0 50 20 10 5 2 1 [ 10 Pa ] ì -9 -1 C 012 3 Viscosity [cP] 0 0.0 01 0.002 0.005 0. 01 0.02 0.05 0 .1 0.2 0.5 1 10243852 65 79 93 10 7 12 1 14 9 17 7 204 Viscosity [Pas] 0 Oil ... expression: = 1. 216 +4 .14 3ì(log 10 0 ) 3.0627 +2.848 10 4 ìb 5 .19 03 (log 10 0 ) 1. 5976 3.999ì (log 10 0 ) 3.0975 0 .11 62 (2 .12 ) where:...

Ngày tải lên: 13/08/2014, 16:21

... 3 2. 88 3 .2 3. 52 ISO VG 5 4.14 4.6 5.06 ISO VG 7 6. 12 6.8 7.48 ISO VG 10 9.00 10 11.0 ISO VG 15 13.5 15 16.5 ISO VG 22 19.8 22 24 .2 ISO VG 32 28.8 32 35 .2 ISO VG 46 41.4 46 50.6 ISO VG 68 61 .2 ... 74.8 ISO VG 100 90.0 100 110 ISO VG 150 135 150 165 ISO VG 22 0 198 22 0 24 2 ISO VG 320 28 8 320 3 52 ISO VG 460 414 460 506 ISO VG 680 6 12 680 748 ISO VG 1000 900 1000 110...

Ngày tải lên: 13/08/2014, 16:21

... w h dxdy (4. 13) LUBRICANTS AND THEIR COMPOSITION 79 T ABLE 3. 3 NLGI grease classification [28]. 000 445 - 475 00 400 - 430  0 35 5 - 38 5 1 31 0 - 34 0 2 265 - 295 3 220 - 250 4 ... Engrs., Vol. 182, Pt. 3A, 1967-1968, pp. 585- 5 93. 32 A.G. Papay, Oil-Soluble Friction Reducers, Theory and Application, Lubrication Engineering, Vol. 39 , 19 83, pp. 419-426...

Ngày tải lên: 13/08/2014, 16:21

... ratios. 0 0 1 0 .48 2 0.2 0 .46 6 0 .4 0 .45 3 0.6 0 .44 2 0.8 0 .43 1 1.0 0 .42 2 1.2 0 .41 4 1 .4 0 .40 6 1.6 0.399 1.8 0.393 2.0 0.387 2.2 0.381 2 .4 0.376 2.6 0.371 ... h 1 = h 0 (K + 1) (4. 44) Substituting into (4. 43) the constants ‘ h ’ and ‘C’ in terms of ‘K’ are: = 2h 0 (K + 1) h ¯ (K + 2) C = 1 h 0 (K + 2) (4. 45)...

Ngày tải lên: 13/08/2014, 16:21

... [N] 1. 757 5 ì10 4 -0.793 2.033 2 .59 6 1.042 0.884 -1 .51 0 - - 1.108 - 8 H [W] 2.79 15 10 3 -0 .57 9 1 .53 0 0.873 2 .50 0 1.642 -0.2 25 - - 9 1. 051 6ì 10 2 0.399 -1.040 1.372 -0 .53 9 -0. 458 0.7 65 - - 10 T max ... 10 1 37.8C 1.1 93.3C 2.46 L 2 .51 5 D 0 .56 3 N 0 .52 8 c 1.09 T S 0.383 () 1 2 1.3 85 or row 7: W = 1. 757 5 ì 10 4 37.8C 0.793 93.3C 2.033 L 2 .59 6 D 1.042 N 0....

Ngày tải lên: 13/08/2014, 16:21

... velocity [m/s]; 240 ENGINEERING TRIBOLOGY Computer Program for the Analysis of Grooved 360 ° Journal Bearings The example of a computer program ‘GROOVE’ for analysing of a grooved 360 ° journal bearing ... large. It can be seen from Figure 5.25 that for a 36 subtended groove angle and 0 .6 relative groove length, the dimensionless flow is about 6. 8. Assuming that the bearing entraini...

Ngày tải lên: 13/08/2014, 16:21

... on Numerical and Experimental Methods in Tribology, Sept. 1983, editors: D. Dowson, C.M. Taylor, M. Godet and D. Berthe, Butterworths, 1984, pp. 60 -70 . 258 ENGINEERING TRIBOLOGY In this chapter, the mechanism ... Wiley and Sons, 1980. 7 J.N. Shinkle and K.G. Hornung, Frictional Characteristics of Liquid Hydrostatic Journal Bearings, Transactions ASME, Journal of Basic Engineering,...

Ngày tải lên: 13/08/2014, 16:21

... 0.304p max = 0.304 ì 55.4 = 16 .8 [MPa] Ã Depth at which Maximum Shear Stress Occurs z = 0. 786 b = 0. 786 ì (5.75 ì 10 6 ) = 4.5 × 10 −6 [m] 334 ENGINEERING TRIBOLOGY · Flash Temperature in ... 1.3 380 2 ì 1.3 982 ì 50 ì 0.012 (2.3 08 ì 10 11 ) () 1/3 = 2.32 ì 10 4 [m]a = 6k 2 WR' E' () 1/3 = 1.73 ì 10 4 [m] b = 6WR' kE' () 1/3 = 6 ì 1.3 982 ì 50 ì 0.012...

Ngày tải lên: 13/08/2014, 16:21

... Institute for Technology and Mechanical Engineering, Moscow, 194 9. 2 H.M. Martin, Lubrication of Gear Teeth, Engineering, London, Vol. 102, 191 6, pp. 1 19- 121. 3 D. Dowson and G.R. Higginson, Elastohydrodynamic ... Journal of Lubrication Technology, Vol. 99 , 197 7, pp. 485-487. 13 F.T. Barwell, Bearing Systems, Principles and Practice, Oxford University Press, 197 9. 14 Engineering S...

Ngày tải lên: 13/08/2014, 16:21

... concentrations reaching 5% [49]. 0 50 100 150 10 100 100 0 10 4 10 5 10 6 Number of cycles to disruption Slip amplitude [àm] Vacuum evaporation Sputtering 100 V bias 200V bias Ion Plating FIGURE ... enriched with the additives dibenzyl 410 ENGINEERING TRIBOLOGY 128 C. Kajdas, Physics and Chemistry of Tribological Wear, Proceedings of the 10th International Tribology Co...

Ngày tải lên: 13/08/2014, 16:21

... Schmierstoff, Schmiertechnik, Vol. 11, 1964, pp. 271-280. 25 H.H. Krause, S.L. Cosgrave and C.M. Allen, Phthalocyanines as High Temperature Lubricants, Journal of Chemical Engineering Data, Vol. 6, 1961, pp. 112 -118 . 26 ... technology has extended the control of wear to many previously unprotected engineering components. 436 ENGINEERING TRIBOLOGY · Laser Surface Hardening and All...

Ngày tải lên: 13/08/2014, 16:21

... DC. 6 2. DRAWINGS 2. 2.4. Resistors 24 . General symbol. 25 . Old symbol sometimes used. 26 . Fixed resistor with a fixed tapping. 27 . General symbol, variable resistance (potentiometer). 28 . Alternative ... (female contact). 19. Coaxial plug. 20 . Coaxial socket. 2. 2.3. Inductors and transformers 21 . General symbol, coil or winding. 22 . Coil with a ferromagnetic core. 23 ....

Ngày tải lên: 13/08/2014, 16:21

... 120 180 ~~ ~~ ~ ~ ~~ 69 90 18 72 72 1 42 1 42 2 12 90 140 18 85 85 165 165 24 5 140 24 0 18 100 100 1 92 1 92 28 4 24 0 300 18 110 110 21 4 21 4 318 Fit Journal Housing Clearance ... C2 .Nod c3 From Up to Min. Max. Min. Max. Min. Max. - 12 8 32 32 68 68 104 ~~~~~ 12 20 10 40 40 82 82 124 20 35 12 50 50 100...

Ngày tải lên: 13/08/2014, 17:20