Search for dissertations about: "Wheel–rail interaction"
Showing result 1 - 5 of 16 swedish dissertations containing the words Wheel–rail interaction.
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1. Train–Track–Bridge Interaction for the Analysis of Railway Bridges and Train Running Safety
Abstract : In this thesis, train–track–bridge interaction (TTBI) models are used to study the dynamic response of railway bridges. A TTBI model considers the dynamics of the train in addition to that of the track–bridge system. The TTBI model enables the assessment of train running safety and passenger comfort. READ MORE
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2. Simulation of Dynamic Interaction between Train and Turnout
Abstract : Dynamic train–track interaction is more complex in railway turnouts (switches & crossings) than on ordinary tangent or curved tracks. Multiple contacts between wheel and rail are common, and severe impact loads with broad frequency contents are induced when the nominal wheel–rail contact conditions are disturbed due to the continuous variation in rail profiles and the discontinuities in the crossing panel. READ MORE
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3. Dynamic Train-Turnout Interaction – Mathematical Modelling, Numerical Simulation and Field Testing
Abstract : Two models for simulation of dynamic interaction between train and turnout are developed. The first one is derived using a commercial software for dynamics of multi-body systems. READ MORE
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4. Slab track optimisation considering dynamic train–track interaction
Abstract : Slab track is a type of railway track that is frequently used e.g. in high-speed applications as an alternative to ballasted track. Slab track is also well suited on bridges and in tunnels since no ballast is required and the cross-section of tunnels can be reduced. READ MORE
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5. Influence of railway wheel tread damage and track properties on wheelset durability – Field tests and numerical simulations
Abstract : Wheel tread damage leading to high magnitudes of vertical wheel–rail contact forces is a major cause of train delays in the Swedish railway network, particularly during the coldest months of the year. According to regulations, vehicles generating wheel–rail impact loads exceeding the limit values must be taken out of service for wheel maintenance. READ MORE