Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"VT-FRA Roller Rig"”.
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Design and Development of Force Control and Automation System for the VT-FRA Roller Rig
… Virginia Tech – Federal Railroad Administration (VT-FRA) Roller Rig. The VT-FRA Roller Rig is a state-of-the-art roller Rig for studying contact mechanics. It consists of a 0.2m diameter wheel and a 1m diameter roller in vertical configuration, which replicates the wheel-rail contact in a 1/4th …
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Accurate Wheel-rail Dynamic Measurement using a Scaled Roller Rig
… accurate dynamic measurements on a scaled roller rig designed and constructed by Virginia Tech and the Federal Railroad Administration (VT-FRA Roller Rig). The study also aims at determining the effect of naturally generated third-body layer deposits (because of the wear of the wheel and/or …
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A Statistical Approach to Modeling Wheel-Rail Contact Dynamics
… large volume of data that is collected on the VT-FRA state-of-the-art roller rig. The intent is to use the statistical principles to highlight the relative importance of various factors that exist in practice to longitudinal and lateral tractions and to develop parametric models that can be …
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Effect of Wheel and Rail Conditions on Contact Dynamics and Mechanics
… Virginia Tech – Federal Railroad Administration (VT-FRA) Roller Rig to assess how different running conditions affect the wheel-rail interface (WRI) dynamics and mechanics under repeatable and precise test settings. The advanced roller rig is used to emulate wheel loads, lateral positions, angles …
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Experimental Evaluation of Wheel-Rail Interaction
… Virginia Tech Federal Railroad Administration (VT-FRA) Roller Rig. Various contact dynamics that emulate field application of railroad wheels on tracks are set up on the rig under precise, highly-controlled and repeatable conditions. For each setup, the longitudinal and lateral traction (creep) …