Search for dissertations about: "Railway vehicle dynamics"

Showing result 1 - 5 of 26 swedish dissertations containing the words Railway vehicle dynamics.

  1. 1. 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

  2. 2. 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

  3. 3. 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; Vehicle and Maritime Engineering; Farkostteknik;

    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

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

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Albin Johnsson; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway vehicle dynamics; Bogie suspension design; Multi-objective optimization; 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

  5. 5. Optimisation of horizontal alignments for railways - Procedures involving evaluation of dynamic vehicle response

    University dissertation from Institutionen för farkostteknik

    Author : Björn Kufver; KTH.; [2000]
    Keywords : Railway; track geometry; alignment; cant; climbing ratios; clothoids; guiding forces; passenger comfort; Pct; superelevation ramps; simulation; track shift forces; track vehicle interaction; transition curves; vehicle dynamics; wheel rail forces;

    Abstract : This doctoral thesis summarises and deepens eightpublications on a project concerning railway alignments.The thesis presents an approach to definingequally costlyalignment alternatives. READ MORE