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FAST-CN01Acad. year: 2024/2025
Wheel – rail interface, wheelset and track dimensions, equivalent conicity, lateral movement of wheelset on straight trackWheel – rail contact stresses, Hertz theory, adhesion and adhesion force, train resistances Vehicle in curve, Vogel theory, Heumann theory, forces on wheelset, derailment condition Track loads, vertical, lateral and longitudinal forces, influence of higher operation speedStatic track design, rail stresses, sleeper stresses, vertical stresses on ballast bed and formation, computer modelsThe rail, manufacturing, welding, testing and acceptance, rail failures, rail grindingSwitches and crossing, types, turnout parts. Geometry of set of switches and common crossings. Manufactured types and notation.The single turnout, stock rail, switch rail (blade), common and crossings, sleepers, fastenings systems. Operating and locking systems. Crossings and slip points. Turnout collections. Cross overs, junctions, sets of turnouts. Turnouts in curves. High speed turnouts, development of new turnouts structures.
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