Sökning: "Wheel-rail contact"

Visar resultat 6 - 10 av 17 uppsatser innehållade orden Wheel-rail contact.

  1. 6. Estimation of wheel-rail friction at vehicle certification measurements

    Master-uppsats, KTH/Spårfordon

    Författare :Márton Pálinkó; [2016]
    Nyckelord :;

    Sammanfattning : In certification of new rail vehicles with respect to running characteristics, a wide variety of operating conditions needs to be considered. Behaviour on straight and curved tracks, including twisted tracks at various speeds, is of great importance. However, the wheel-rail friction should always be high corresponding to dry conditions. LÄS MER

  3. 7. The potential of Fluid Dynamic Absorbers for railway vehicle suspensions

    Master-uppsats, KTH/Spårfordon

    Författare :Visakh V Krishna; [2016]
    Nyckelord :;

    Sammanfattning : The main running objectives concerning the vertical dynamics of passenger rail vehicles are ride comfort and safety. The goal of this thesis is to employ the use of a Fluid Dynamic Absorber to minimize the vertical acceleration of the car body while minimizing the dy-namic force fluctuations in the wheel rail contact. LÄS MER

  4. 8. Verication of simulated wheel-rail forces with measured data

    Master-uppsats, KTH/Spårfordon

    Författare :Marcus Jans Bertilsson; [2015]
    Nyckelord :;

    Sammanfattning : The purpose of this thesis was to verify the simulated wheel-rail forces from the simulation soft-ware Simpack by comparing the results with on-track measurements. The report constitutes a literature study on wheel-rail contact modelling and techniques for measurements of track forces and track irregularities. LÄS MER

  5. 9. Investigation of Causes for Wheel Squeal on Roslagsbanan in Stockholm

    Master-uppsats, KTH/Spårfordon

    Författare :Zhan Ouyang; [2014]
    Nyckelord :;

    Sammanfattning : The purpose of this work is to investigate the possible causes of wheel squeal on Roslagsbanan, a narrow gauge (891mm) suburban railway system in Stockholm, Sweden. Simulation of the dynamic behaviour of vehicles negotiating curves was carried out by means of the Swedish multibody simulation software GENSYS [1]. LÄS MER

  7. 10. High frequency vehicle-track interactionsimulation : Coupling of an advanced track model with a multi-bodysystem

    Master-uppsats, KTH/Järnvägsteknik

    Författare :Pierre Gely; [2014]
    Nyckelord :;

    Sammanfattning : The forces caused by the high frequency vehicle-track interaction have a great impact on thetrack maintenance. They should be represented in vehicle-track models in order to predicttheir impact. As a result, a multi-body system (MBS) should be extended with an advancedtrack model. LÄS MER