Search for dissertations about: "Railway vehicle dynamics"

Showing result 1 - 5 of 30 swedish dissertations containing the words Railway vehicle dynamics.

  1. 1. Multi-objective optimization of railway bogie suspension damping

    University dissertation from Chalmers University of Technology

    Author : Albin Johnsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optimeringslära; systemteori; Optimization; systems theory; Farkostteknik; Vehicle engineering; Fastkroppsmekanik; Solid mechanics; Övrig teknisk mekanik; Other engineering mechanics; Multi-objective optimization; Railway vehicle dynamics; Bogie suspension design; Pareto optimized bogie primary and secondary suspensions damping;

    Abstract : In this thesis multi-objective optimization is used to find Pareto fronts showing the set of optimized damping parameters of primary and secondary bogie suspensions. Special interests are put on requirements to enhance safety and comfort of a railway vehicle. READ MORE

  2. 2. Railway Track Stiffness Dynamic Measurements and Evaluation for Efficient Maintenance

    University dissertation from Stockholm : KTH

    Author : Eric Berggren; KTH.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway track stiffness; maintenance; soil dynamics; measurement; simulation; vibration; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Abstract : Railway track stiffness (vertical track load divided by track deflection) is a basic parameter oftrack design which influences the bearing capacity, the dynamic behaviour of passing vehiclesand, in particular, track geometry quality and the life of track components. Track stiffness is abroad topic and in this thesis some aspects are treated comprehensively. READ MORE

  3. 3. Wheel-rail contact modelling in vehicle dynamics simulation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Matin Shahzamanian Sichani; KTH.; KTH.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel-rail contact; non-elliptic contact; vehicle-track interaction; rail vehicle dynamics; rolling contact; MBS; virtual penetration; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

    Abstract : The wheel-rail contact is at the core of all research related to vehicle-track interaction. This tiny interface governs the dynamic performance of rail vehicles through the loads it transmits and, like any high stress concentration zone, it is subjected to serious damage phenomena. READ MORE

  4. 4. Tread Braking of Railway Wheels - Noise-related Tread Roughness and Dimensioning Wheel Temperatures

    University dissertation from Chalmers University of Technology

    Author : Tore Vernersson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Farkostteknik; Vehicle engineering; railway; tread braking; noise; corrugation; thermoelastic analysis; temperature; heat partitioning; block material; rail chill;

    Abstract : Block braking is a commonly used braking system for freight wagons and other types of railway vehicles. One or several brake blocks are pressed against the tread (running surface) of the wheel, which is also in rolling contact with the rail. READ MORE

  5. 5. On Efficient Modelling of Wheel-Rail Contact in Vehicle Dynamics Simulation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Matin Shahzamanian Sichani; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel-rail contact; non-elliptic contact; rail vehicle dynamics; rolling contact; vehicle-track interaction; wheel-rail damage; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology; Farkostteknik; Vehicle and Maritime Engineering;

    Abstract : The wheel-rail contact is at the core of all research related to vehicletrackinteraction. This tiny interface governs the dynamic performanceof rail vehicles through the forces it transmits and, like any high stressconcentration zone, it is subjected to serious damage phenomena. READ MORE