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    Static and Dynamic Characteristics of Rolling-Pad Journal Bearings in Super-Laminar Flow Regime

    Source: Journal of Tribology:;1988:;volume( 110 ):;issue: 001::page 73
    Author:
    Makoto Mikami
    ,
    Hiromu Hashimoto
    ,
    Mikio Kumagai
    ,
    Shuetsu Uno
    DOI: 10.1115/1.3261578
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Static and dynamic characteristics of load-on-type rolling-pad journal bearings with six pads have been studied theoretically and experimentally by considering the effects of both turbulence and viscous heat generation in the oil film. By concurrently solving a turbulent lubrication equation and an adiabatic energy equation, pressure and temperature distributions, load capacity, and friction force are obtained. Moreover, the linearlized spring and damping coefficients of oil film are calculated under the assumption of small displacements of the journal center. It is found that the load capacity and the friction force considerably increase due to turbulence, and the effects of heat generated under turbulent conditions are more pronounced than those under laminar conditions. Also clarified are that bearing characteristics are improved by preloading the lower-side two pads located before and after the lowest pad, and that the curvature radius of the pad insignificantly affects the characteristics. The experimental results on static characteristics agree well with the theoretical results.
    keyword(s): Flow (Dynamics) , Journal bearings , Turbulence , Stress , Friction , Force , Heat , Equations , Springs , Temperature distribution , Pressure , Lubrication , Bearings AND Damping ,
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      Static and Dynamic Characteristics of Rolling-Pad Journal Bearings in Super-Laminar Flow Regime

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/104592
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    • Journal of Tribology

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    contributor authorMakoto Mikami
    contributor authorHiromu Hashimoto
    contributor authorMikio Kumagai
    contributor authorShuetsu Uno
    date accessioned2017-05-08T23:28:27Z
    date available2017-05-08T23:28:27Z
    date copyrightJanuary, 1988
    date issued1988
    identifier issn0742-4787
    identifier otherJOTRE9-28468#73_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/104592
    description abstractStatic and dynamic characteristics of load-on-type rolling-pad journal bearings with six pads have been studied theoretically and experimentally by considering the effects of both turbulence and viscous heat generation in the oil film. By concurrently solving a turbulent lubrication equation and an adiabatic energy equation, pressure and temperature distributions, load capacity, and friction force are obtained. Moreover, the linearlized spring and damping coefficients of oil film are calculated under the assumption of small displacements of the journal center. It is found that the load capacity and the friction force considerably increase due to turbulence, and the effects of heat generated under turbulent conditions are more pronounced than those under laminar conditions. Also clarified are that bearing characteristics are improved by preloading the lower-side two pads located before and after the lowest pad, and that the curvature radius of the pad insignificantly affects the characteristics. The experimental results on static characteristics agree well with the theoretical results.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleStatic and Dynamic Characteristics of Rolling-Pad Journal Bearings in Super-Laminar Flow Regime
    typeJournal Paper
    journal volume110
    journal issue1
    journal titleJournal of Tribology
    identifier doi10.1115/1.3261578
    journal fristpage73
    journal lastpage79
    identifier eissn1528-8897
    keywordsFlow (Dynamics)
    keywordsJournal bearings
    keywordsTurbulence
    keywordsStress
    keywordsFriction
    keywordsForce
    keywordsHeat
    keywordsEquations
    keywordsSprings
    keywordsTemperature distribution
    keywordsPressure
    keywordsLubrication
    keywordsBearings AND Damping
    treeJournal of Tribology:;1988:;volume( 110 ):;issue: 001
    contenttypeFulltext
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