Hydrodynamic Lubrication 2009 Part 10 pps

... b 2 (s) three-element 80.5 1.68 10 −2 0.0 2.40 10 −2 0.0 four-element 80.5 2.63 10 −2 0.0 3.63 10 −2 6.94 10 −5 five-element 85.1 3.46 10 −2 6.22 10 −5 4.19 10 −2 1.30 10 −4 Coefficients of the ... Basic Equations for Thermohydrodynamic Lubrication Hydrodynamic lubrication that takes heat generation and temperature rise into con- sideration is called thermohydrodynamic lubricatio...

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... 5). 22 2 Foundations of Hydrodynamic Lubrication surface of 2.10a,ba and the upper surface of 2.10a,bb are equivalent, and they are called the moving surface. When 2.10a,ba is regarded as an ... of Fig. 2.10a,ba and the lower surface of Fig. 2.10a,bb are equiv- alent as stated above, and are called the stationary surface. Similarly, the lower 16 2 Foundations of Hydrodynamic Lubricatio...

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... Incompressible Lubrication Problems”, Trans. ASME. F, Vol. 91, No. 3, July 1969, pp. 524 - 533. 10. S. Wada, H. Hayashi and M. Migita, “Application of Finite Element Method to Hydrody- namic Lubrication ... (Part 1)” (in Japanese), Trans. JSME, Vol. 37, No. 295, March 1971, pp. 583 - 592. 11. S. Wada and H. Hayashi, “Application of Finite Element Method to Hydrodynamic Lu- brication P...

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... ASME, Vol. 100 , No. 1, March 1978, pp. 107 - 112. 26. S. Wada and H. Hashimoto, “Turbulent Lubrication Theory Using the Frictional Law (First Report, Derivation of Turbulent Coefficient and Lubrication ... September 1983, pp. 1 510 - 1520. 31. T. Kato and Y. Hori, “Turbulent Lubrication Theory Using k-ε Model for Journal Bear- ings” (in Japanese), Journal of Japan Society of Lubricat...

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... ResultsofAnalysis 101 5.6 FloatingBushBearings 102 5.7 ThreeCircularArcBearings 106 5.8 PorousBearings 109 5.8.1 Governing Equations 109 5.8.2 Stability of a Shaft System . . . 110 5.9 Chaos in ... Y. H . 4 1 Friction, Wear, and Lubrication the hydrodynamic lubrication described above and boundary lubrication which will be explained later and is called mixed lubrication. S...

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... sin φdzdφ − P 1 sin θ = 0 (3.58) By substituting Eq. 3.56 into the above equations and using the partial fraction decomposition method and J 3 , J 2 , and J 1 in Eq. 3.11, etc, the components of ... solutions include the orthogonal function expansion method [4] [12], the finite element method [9] [10] [11] and the finite difference method [13]. The finite difference method will be described here....

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... constant, and is almost equal to the critical speed of the shaft. 5.2 Oil Whip Theory 81 Fig. 5 .10. Locus of the journal center for finite length bearings [18] Fig. 5.11. Eccentricity of the journal ... is used for a finite length bearing, the locus of the journal center will be as shown in Fig. 5 .10; the eccentricity ratio can be obtained from Fig. 5.11. The stability chart in this case is s...

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... I p I d N c N s LRc µ (mm) (kg) (kg·mm) (kg·mm) (rpm) (rpm) (mm) (mm) (mm) (mPa·s) A 100 0 10 10 5 1893 3383 15 30 0.06 20 B 680 10 10 5 3376 5445 15 30 0.06 20 l, shaft length; m, disk mass; I p , I d , moment ... in the vertical direction (maximum 102 .9 Gal) of the Taft earthquake (1952, United States) is simultaneously applied to the system. Waves with frequencies of 10 Hz or less...

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... instead, to perform lubrication by the oil that comes out of the bush with temperature rise. While porous bearings are usually used under boundary lubrication conditions, fluid lubrication may also ... permeability. Substituting Eq. 5 .104 into the equation of continuity: ∂ x ∂x + ∂ y ∂y + ∂ z ∂z = ∇ = 0 (5 .105 ) yields the following equation: ∂ 2 p ∗ ∂x 2 + ∂ 2 p ∗ ∂y 2 + ∂ 2 p ∗ ∂...

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... the grating glass is 200 mm × 200 mm × 10 mm, the line density of the grooves is 200/inch, and the width of a groove is equal to that of the transparent part between the grooves. The foil disk ... the pressure valley just behind the exit. In the flat part, the pressure is lower and the film thickness is larger than those in the cylindrical part. 126 6 Foil Bearings 6.2.3 Solution Procedu...

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