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    Wheelset Mechanics During Wheelclimb Derailment

    Source: Journal of Applied Mechanics:;1984:;volume( 051 ):;issue: 003::page 680
    Author:
    A. Karmel
    ,
    L. M. Sweet
    DOI: 10.1115/1.3167692
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: An analysis of the mechanics and dynamics of a railroad vehicle wheelset during flange contact and wheelclimb derailment is presented. The theoretical model includes wheelset lateral, vertical, roll, yaw, and axle rotation degrees of freedom, plus lateral displacement of the truck frame. The equations of motion are based on the kinematics and dynamics of the wheelset subject to constraints imposed by wheel/rail contact geometry. These constraints are used to compute creepages and normal forces at the wheel/rail contact points, needed as inputs to the Kalker Simplified Theory of rolling contact. Computational methods for simulation of the nonlinear dynamic model are discussed. Results of the simulation demonstrate the significance of the various degrees of freedom on wheelset motion and on predicted values of the derailment quotient (Q/P).
    keyword(s): Kinematics , Dynamics (Mechanics) , Force , Rotation , Motion , Simulation , Rolling contact , Structural frames , Equations of motion , Flanges , Degrees of freedom , Vehicles , Displacement , Geometry , Railroads , Rails , Wheels , Yaw , Trucks , Dynamic models , Wheelsets AND Computational methods ,
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      Wheelset Mechanics During Wheelclimb Derailment

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    http://yetl.yabesh.ir/yetl1/handle/yetl/97999
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    contributor authorA. Karmel
    contributor authorL. M. Sweet
    date accessioned2017-05-08T23:17:02Z
    date available2017-05-08T23:17:02Z
    date copyrightSeptember, 1984
    date issued1984
    identifier issn0021-8936
    identifier otherJAMCAV-26240#680_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/97999
    description abstractAn analysis of the mechanics and dynamics of a railroad vehicle wheelset during flange contact and wheelclimb derailment is presented. The theoretical model includes wheelset lateral, vertical, roll, yaw, and axle rotation degrees of freedom, plus lateral displacement of the truck frame. The equations of motion are based on the kinematics and dynamics of the wheelset subject to constraints imposed by wheel/rail contact geometry. These constraints are used to compute creepages and normal forces at the wheel/rail contact points, needed as inputs to the Kalker Simplified Theory of rolling contact. Computational methods for simulation of the nonlinear dynamic model are discussed. Results of the simulation demonstrate the significance of the various degrees of freedom on wheelset motion and on predicted values of the derailment quotient (Q/P).
    publisherThe American Society of Mechanical Engineers (ASME)
    titleWheelset Mechanics During Wheelclimb Derailment
    typeJournal Paper
    journal volume51
    journal issue3
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.3167692
    journal fristpage680
    journal lastpage686
    identifier eissn1528-9036
    keywordsKinematics
    keywordsDynamics (Mechanics)
    keywordsForce
    keywordsRotation
    keywordsMotion
    keywordsSimulation
    keywordsRolling contact
    keywordsStructural frames
    keywordsEquations of motion
    keywordsFlanges
    keywordsDegrees of freedom
    keywordsVehicles
    keywordsDisplacement
    keywordsGeometry
    keywordsRailroads
    keywordsRails
    keywordsWheels
    keywordsYaw
    keywordsTrucks
    keywordsDynamic models
    keywordsWheelsets AND Computational methods
    treeJournal of Applied Mechanics:;1984:;volume( 051 ):;issue: 003
    contenttypeFulltext
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