Đang chuẩn bị liên kết để tải về tài liệu:
Friction and Lubrication in Mechanical Design Episode 2 Part 4

Tham khảo tài liệu 'friction and lubrication in mechanical design episode 2 part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 0.06 f Figure 7.34 Calculated coefficient of friction vs. sliding rolling ratio for different rolling speeds T 26 c 78.8 F steel-steel contact ground surfaces s 0.3 pm 12pin. w 378 812N m 2160 lbf in. 10W30 oil R 0.0234m 0.92 in. . f Figure 7.35 Calculated coefficient of friction vs. sliding rolling ratio for different normal loads T 26 c 78.8 F steel-steel contact ground surfaces 5 0.3 pm 12pin. u 3.2m sec 216 in. sec 10W30 oil R 0.0234m 0.92 in. . 305 0.06 0.05 0.00 ------------1-----------1----------1-----------1-----------1----------- 0.00 0.05 0.10 0.15 0.20 0.25 0.30 f Figure 7.3 Calculated coefficient of friction vs. sliding rolling ratio for different effective radii T 26C 78.8 F steel-steel contact ground surfaces s 0.3 pm 12 pin. w 378 812 N m 2160 lbf in. 10W30 oil tn 3.2m s 126 in. sec . Figure 7.37 Calculated coefficient of friction vs. sliding rolling ratio for different viscosity steel-steel contact ground surfaces s 0.3 pm 12 pin. w 378 812 N m 2160 lbf in. 10W30 oil tn 3.2m s 126 in. sec R 0.0234m 0.92 in. . 306 Rolling Sliding Contacts 307 Figure 7.38 Calculated coefficient of friction vs. sliding rolling ratio for different materials T 26 c 78.8 F ground surfaces s o.3pm 12pin. V 378 812 N m 21601bf in. 10W30 oil t l 3.2m s 126in. sec R 0.0234 m 0.92 in. . s 0.03 pm 12 pin. w 378 812 N m 2160 lbf in. 10W30 oil UỈ 3.2m sec 126 in. sec R 0.0234m 0.92 in. . REFERENCES 1. Palmgren A. Ball and Roller Bearing Engineering s. H. Burbank Philadelphia 1945. 2. Tabor D The Mechanism of Rolling Friction Phil. Mag. Vol. 43 1952 pp. 1055 and Vol. 45 1954 p. 1081. 3. Rabinowicz E. Friction and Wear of Materials John Wiley and Sons New York NY 1965. 4. Dowson D. and Higginson G. R. Elastohydrodynamic Lubrication Pergamon Oxford 1977. 5. Grubin A. N. Book No. 30 English Translation DSIR 1949. 6. Dowson D. and Whitaker A. V. A Numerical Procedure for the Solution of the Elastohydrodynamic Problem of Rolling and Sliding Contacts .