Global ETD Search
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Showing 1 to 4 of 4 for “"non-Hertzian contact"”.
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Investigation of the finite element method for computing wheel/rail contact forces in steady curving
… years. Contemporary curving models include such nonlinear effects as two-point contact, creep force saturation, and rail flexibility. The usual approximation concerning the contact geometry is that the Iocalized wheel and rail curvatures at the center of the contact patch are constant throughout …
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The development of rail-head acoustic roughness
… used as the input to a two-dimensional rolling contact and wear model. The possibility of multiple wear mechanisms arising from stress concentrations is considered by using a wear coefficient that can vary with the conditions at each point in the contact. The contact model is based on a …
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Accurate Wheel-rail Dynamic Measurement using a Scaled Roller Rig
… on creep or traction forces. The wheel-rail contact forces, also referred to as traction forces, are critical for all aspects of rail dynamics. These forces are quite complex and they have been the subject of several decades of research, both in experiments and modeling. The primary intent of …
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Numerical and experimental investigation of shakedown in evolving non-Hertzian rolling contact
The non-conforming rolling contact under high loads results in considerable plastic deformation of the surface. This surface plastic flow is studied using a twin-disk tribometer, and the observed deformation as a function of the number of rolling cycles is classified into three distinct stages. …