Search for dissertations about: "wheel–rail force"
Found 5 swedish dissertations containing the words wheel–rail force.
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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. Correlation between Track Irregularities and Vehicle Dynamic Response Based on Measurements and Simulations
Abstract : Deviations from the design track geometry are called track irregularities, which are a main excitation mechanism in the track–vehicle dynamic system, and very important to monitor and maintain to have trac on a line run safely and comfortably. Especially during vehicle acceptance testing, it is important that a new vehicle behaves close to design predictions and within limit values, thus it is important to be able to describe track irregularities in a consistent way. READ MORE
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3. Towards Model-Based Condition Monitoring of Railway Switches and Crossings
Abstract : Railway switches and crossings (S&C, turnouts) connect different track sections and create a railway network by allowing for trains to change between tracks. This functionality comes at a cost as the load-inducing rail discontinuities in the switch and crossing panels cause much higher degradation rates for S&C compared to regular plain line track. READ MORE
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4. Adhesion in the wheel-rail contact
Abstract : To attract more customers and compete with other modes of transportation, railway transport needs to ensure safety, punctuality, high comfort, and low cost; wheel–rail adhesion, i.e., the transmitted tangential force in the longitudinal direction during driving and braking, plays an important role in all these aspects. READ MORE
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5. Adhesion in the wheel-rail contact under contaminated conditions
Abstract : Railway vehicles require a certain level of adhesion between wheel and rail to operate efficiently, reliably, and economically. Different levels of adhesion are needed depending on the vehicle running conditions. READ MORE