Friction and Lubrication in Mechanical Design Episode 2 Part 3 docx

... 0. 03 pm (12pin.), W = 37 8,812N/m (21 601bf /in. ), 10W30 oil, U1 = 3 .2 m/sec ( 126 in. /sec), R = 0. 0 23 4 m (0. 92 in. ). Figure 7 .38 shows calculated coefficient of friction versus sliding/ ... and Es for AT, K1, c1, p1, El and K2, c2, p2, E2 in Eqs. (7 .27 ) and (7 .28 ), where f is replaced byf,, L is replaced by L = 32 J'm. 2....

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... temperature viscosity coefficient. Table 6.8 24 8 Chapter 6 23 . 24 . 25 . 26 . 27 . 28 . 29 . 30 . 31 . 32 . 33 . 34 . 35 . 36 . 37 . 38 . Hunter, W. B., and Zienkiewicz, 0. C., “Effect on Temperature ... (N/m2) x 106 (N/m2) 1 2 3 4 5 6 7 8 9 10 11 12 13 0. 025 1 0. 036 1 0. 025 1 0. 036 1 0. 025 1 0. 036 1 0 .2 198 0 .2 198...

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... “Fretting Corrosion of Mild Steel in Air and in Nitrogen,” J. Appl. Mech., 1954, Vol. 21 , p. 39 5. 1 83, pp. 7 23 - 729 . pp. 20 3 -22 4. 1949, Vol. 71, pp. 25 9 -26 8. pp. 22 2 - 23 5. 74, ... 1.9 SiN, on Si 0.404.55a 0 .35 f 0.05 0 .35 f 0.05 0 .35 f 0.05 Increase to - 1.0 - 1 .3 - 1 .3 Si 02 on Si 02 0. 43 f 0.05 0 .20 f 0....

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... comes into play and the constant stiffness model can no longer be justified. An empirical method 54 Chapter 2 18. 19. 20 . 21 . 22 . 23 . 24 . 25 . 26 . 27 . 28 . 29 . 30 . 31 . 32 . 33 . ... 0 (2. 18) 36 Chapter 2 Substituting Eq. (2. 4) into Eq. (2. 5) yields: The combination of Eqs. (2. 3) and (2. 4) gives: Substituting Eq. (2. 7) into...

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... (N/m2) x 106 (N/m2) 1 2 3 4 5 6 7 8 9 10 11 12 13 0. 025 1 0. 036 1 0. 025 1 0. 036 1 0. 025 1 0. 036 1 0 .2 198 0 .2 198 0 .2 198 0. 031 I 0. 031 1 0 .26 49 0 .26 49 3. 72 ... 12 0. 020 2 0. 024 5 0. 036 8 0.0 430 0.0576 0.0 63 1 0.0 036 0.0 104 0.0007 0.0 020 0.644 0.700 0. 93 1 0.994 1 .27 4 1.414 0 . 23 8 0 .33 6 0...

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... were 94,7 03, 189,406 ,28 4,109, and 37 8,8 12 N/m; the slide/roll ratios were 0,0.08,0.154,0 .22 2,0 .34 5; the rolling speeds varied from 0 .3 to 2. 76 m/s, and the sliding speeds were in the range ... coating material Surface roughness (pm AA) Tin Chromium Steel Copper 0. 42 0 .38 0.17 0 .20 Table 7 .2 Material Properties Steel 43 7800 4 73 20 3. 4 C...

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... Table 7 .2 Material Properties Steel 43 7800 4 73 20 3. 4 Copper 40 1 8 930 38 6 1 03 Chromium 94 7 135 450 25 0 Tin 67 728 0 22 2 46 10W30 0.145 888 1880 - Rolling/ Sliding Contacts 25 7 ... were 94,7 03, 189,406 ,28 4,109, and 37 8,8 12 N/m; the slide/roll ratios were 0,0.08,0.154,0 .22 2,0 .34 5; the rolling speeds varied from 0 .3 to 2. 76 m/s, an...

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... alloys Invar 36 ” annealed H,M,80 annealed Monel C 27 0 29 6 22 4 25 2 27 0 27 0 22 4 29 6 I99 468 27 0 39 7 3 59 160 I80 38 4 27 6 24 2 26 0 22 0 21 6 746 22 0 22 6 26 2 34 0 27 0 29 6 ... = 37 8,8 12 N/m (21 60 lbf /in. ), 10W30 oil, U1 = 3 .2 m/s ( 126 in. /sec), R = 0. 0 23 4m (0. 92 in. ). S = 0. 03 pm (12pin.), W = 37 8,812N/m...

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... alloys Invar 36 ” annealed H,M,80 annealed Monel C 27 0 29 6 22 4 25 2 27 0 27 0 22 4 29 6 I99 468 27 0 39 7 3 59 160 I80 38 4 27 6 24 2 26 0 22 0 21 6 746 22 0 22 6 26 2 34 0 27 0 29 6 ... = 37 8,8 12 N/m (21 60 lbf /in. ), 10W30 oil, U1 = 3 .2 m/s ( 126 in. /sec), R = 0. 0 23 4m (0. 92 in. ). S = 0. 03 pm (12pin.), W = 37 8,812N/m...

Ngày tải lên: 05/08/2014, 09:20