Search
CSV
RISAnalysis of Ultra-Thin Gas Film Lubrication Based on Linearized Boltzmann Equation: First Report—Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A generalized Reynolds-type lubrication equation valid for arbitrary Knudsen numbers, defined as the ratio of the molecular mean free path to the film thickness, is derived from a linearized ...
Experimental Investigation of Externally Pressurized Bearings Under High Knudsen Number Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The characteristics of the externally pressurized bearings under high Knudsen number conditions were investigated experimentally by the use of surface restriction bearings in a medium vacuum on ...
Stokes Roughness Effects on Hydrodynamic Lubrication. Part I—Comparison Between Incompressible and Compressible Lubricating Films
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A perturbation method for the Navier-Stokes equations is presented for analyzing Stokes roughness effects on hydrodynamic lubrication in both incompressible and compressible films. The solution is ...
Asymptotic Analysis of Ultra-Thin Gas Squeeze Film Lubrication for Infinitely Large Squeeze Number (Extension of Pan’s Theory to the Molecular Gas Film Lubrication Equation)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ultra-thin gas squeeze film characteristics are analyzed by extending Pan’s asymptotic theory for infinite squeeze number to the molecular gas film lubrication equation which was derived from the ...
Ultra-Thin Gas Squeeze Film Characteristics for Finite Squeeze Numbers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ultra-thin gas squeeze film characteristics for finite squeeze numbers are examined by solving the molecular gas film lubrication (MGL) equation, which has a similar form to the conventional ...
A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes the use of a Poiseuille flow rate database for rapid calculation of a generalized lubrication equation for high Knudsen number gas films. The database is created by numerical ...
Static Characteristics of Gas-Lubricated Slider Bearings Operating in a Helium-Air Mixture
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper outlines experimental investigations of the static characteristics of self-acting gas-lubricated slider bearings operating in a helium-air mixture. The experimental results are compared ...
Sheet Metal Forming Research in Japan
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Research activities and their results on sheet metal forming in Japan are introduced with emphasis on the mechanics of sheet metal press-forming. Based on the governing deformation mechanisms ...
On the Physical Meanings of Λ/Q̃p0 and σ/Q̃p0 in Molecular Gas Film Lubrication Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To estimate molecular gas film lubrication (MGL) characteristics, we propose a modified bearing number Λ′ and a modified squeeze number σ′, which are, respectively, the conventional bearing Λ ...
Dynamic Characteristics of Gas-Lubricated Slider Bearings Under High Knudsen Number Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents numerical analyses of the dynamic characteristics of gas-lubricated slider bearings under high Knudsen number conditions using a generalized lubrication equation based on the ...