New Tribological Ways Part 11 pptx

... inn-1i x-l-l l = : 11 11 11 11 11 04 211 1 3 ( (1 ) (1 ) ) ( ) (1 ) (1 ) ll l ll n Tbe beErbeEbe be σσ α σσ ηη η η −− − ⎡⎤⎡⎤ =+ −− +− − −+ ⎣⎦⎣⎦ With 22 2( ) i i ii i E K α α σ = − , (1 ) i i f j D π σ =+ , ... 8 10 12 14 16 18 0,4 0,6 0,8 1, 0 Cr Theoreti cal cur ve K 1 =93,9; D 1 =0,79 .10 -4 m 2 .s -1 Normalized amplitude Square root m odulat ion f re...

Ngày tải lên: 20/06/2014, 04:20

... MYSLINSKI, Surf. Coat. Technol. 20 4 (20 10), 22 89 -22 93. New Tribological Ways 48 (FCVA), [Martin et al., 1988; McKenzie et al., 1991; Fallon et al., 1993; Polo et al., 20 00] although other techniques ... Surface Science 25 3 (20 07) 5076-5083. [16] A. LIPPITZ, T. HUBERT. Surf. Coat. Technol. 20 0 (20 05) 25 0. [17] H.C. BARSHILIA et al. Surface & Coatings Techno...

Ngày tải lên: 20/06/2014, 04:20

... −u 2 − η 4 ( a 4 d −b 4 e 4 ) F ∗  i sinh −1 [ √ −d−e 4 √ e 4 +du ], −d+e 4 d+e 4  d √ −d −e 4 (c + e 4 )  d(1 +u) e 4 +du √ 1 −u 2 − η 4 (b 4 c −a 4 d)Π ∗  −c+e 4 d+e 4 , i sinh −1 [ √ −d−e 4 e 4 +du ], −d+e 4 d+e 4  d √ −d ... 0.0235 0.0 24 0.0 245 r m �0.0 04 �0.002 0 0.002 0.0 04 z m 0.022 0.0225 0.023 0.0235 0.0 24 0.0 245 r m �0.0...

Ngày tải lên: 20/06/2014, 04:20

... 7.25E-12 1 .5 ± 0.3 1.4 ± 0.1 1.06 ± 0.01 455 6.84E-11 1 .5 ± 0.3 1 .5 ± 0.1 1.07 ± 0.01 Table 2. Shape factors values for different glass particle sizes and the respective wear rates of 52 100 ... 255 , No. 1-6, August-September, pp. 55 -59 . Rabinowicz, E.; Dunn, L. A. & P. G. Russel, P.G. (1961). A study of abrasive wear under three-body conditions, Wear, Vol. 4, No. 5,...

Ngày tải lên: 20/06/2014, 04:20

... Cranfield New Tribological Ways 1 86 The Elliptical Elastic-Plastic Microcontact Analysis 191 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 ... BHRA, Cranfield New Tribological Ways 190 -10-5 0 5 1015202530 - 36 -32 -28 -24 -20 - 16 -12 -8 -4 0 9 8 7 6 5 4 3 2...

Ngày tải lên: 20/06/2014, 04:20

... 170 0.54 95Х18 1800 170 0 61 8 8 0.15 14400 488 100 2.4 110Г13Л 3 27 3 27 16 37 28 1.53 9156 448 0 0 .79 Х12М 73 0 73 0 * 59 - - 0.016 - - 0 1.69 40Х13 1850 1520 48 7 8 0.18 14800 384 330 0 .73 ... 0.34 70 000 1855 100 1.55 D5 2550 1850 56 12 55 0.55 140250 3080 70 0 1.94 D6 2500 2000 57 8 40 0.30 100000 2280 500 1.82 D7 2100 2100 57 7.5 33 0.32 69300 1881 0 1 .75 Н18К9М5Т...

Ngày tải lên: 20/06/2014, 04:20

... (88 ) so that Eq. ( 78) becomes, () 1 13 2 14 4 μ θ μθ θ + == − e TTeT A B (89 ) Substituting θ 1 =0 into Eq. (89 ) gives, 3 2 14 Te T μ θ = (90) Substituting θ 1 =θ 3 into Eq. (89 ) ... dt n t na b n πππ κ π π π ++ −+ ⎛⎞ ==+− ⎜⎟ ⎝⎠ ⎧⎫ ⎪⎪ ⎛⎞ +− ⎨⎬ ⎜⎟ ⎝⎠ ⎪⎪ ⎩⎭ (1 18) New Tribological Ways 254 then Eq. ( 78) becomes 3 3 () 14 4 1 (1 ) 1 1 b b b e TT T AB e θμμ μθ...

Ngày tải lên: 20/06/2014, 04:20

... Vol. 49, T181- 191 , 195 8 [9] E.J.Kaliski, Text. Res. J., Vol.28, 325-3 29, 195 8 [10] M. Nakao, J. Text. Mach Soc. Jpn, Vol.17, 293 - 297 , 196 4 [11] Y. Miura, J. Seni Gakkai, Vol.10 558-563, 195 4 ... (mm 2 ) Variance (mm 2 ) 434 250 294 168 9. 94 500 2.31 0.002306 0.004006 0.003403 0.00 595 6 0.100563 0.002 0.4338 39 3.09E-02 3.19E-01 4.49E-02 2.40E-02 3.33E-0...

Ngày tải lên: 20/06/2014, 04:20

... minima in the sliding direction [10 ＿ 10] and [0001]. Thus, the frictional anisotropy µ k [10 ＿ 1 0]/µ k [0001]may be proportional to (p [10 ＿ 10] /p[0001])×(φ [10 ＿ 10] /φ[0001]) 3 . These values ... prism plane, a~g at the temperature of -10 C, h : rarely pattern like melting at -30ºC New Tribological Ways 318 Fig. 19. Ploughing strength on (10 ＿ 10) calcul...

Ngày tải lên: 20/06/2014, 04:20

... of a journal bearing for periodic loading, ASME Journal of Tribology, Vol. 114 , pp. 107 -115 New Tribological Ways 346 Synchronous frequency Sub synchronous frequency Synchronous frequency Sub ... deep pockets. Figure 11 and 12 show examples of pressure distributions in the area adjacent to one of the six orifices of the pad type " ;11& quot;. In particular, Figure...

Ngày tải lên: 20/06/2014, 04:20

... aerostatic bearings with a single air supply inlet, Transactions of the ASME, 129 (4), pp. 384-390. New Tribological Ways 378 the necessary accuracy. The method also requires detailed measurement ... S. & Jaeger, J. C. (1959). Conduction of Heat in Solids, Oxford University Press. New Tribological Ways 392 4.2 Inverse approach solution for pressure and temperatu...

Ngày tải lên: 20/06/2014, 04:20

... (2009) Preparation and tribological studies of self- assembled triple-layer films. Thin Solid Films, Vol. 517, No. 13, (May, 2009) 3752- 3759, 0040-6090. New Tribological Ways 426 Therefore, ... energy is imparted to the film to overcome the consequent increased steric barriers and then results in higher friction (Kim et al., 1997; Peach et al, 1996). On the New Tribolo...

Ngày tải lên: 20/06/2014, 04:20

... New Tribological Ways 458 while the momentum of momentum equations for the (frictionless) i th pad ... limited to the analysis of steadily-loaded bearings working in laminar lubrication regime. New Tribological Ways 452 2. State-of-the-art Modern lubrication analysis methods enable us to assess ... the journal, the above-mentioned classical expression is not suitable...

Ngày tải lên: 20/06/2014, 04:20

... dy/dt(0)=x(0)·(k xx /m)^(0.5); ω =20 krpm, bearing type 1 New Tribological Ways 484 bearing type diameter d s [mm] air flow G·10 4 [kg/s] 1 0 .155 2 0.1 3 0.1 0.5 1 0.383 2 0.2 3 0.2 1.42 ... downstream pressure p c can be obtained by () s cs sa sh R pp pp RR =− − + (9) New Tribological Ways 490 The initial condition used in the following curves are sp...

Ngày tải lên: 20/06/2014, 04:20