Essays about: "Railway wheel"

Showing result 1 - 5 of 17 essays containing the words Railway wheel.

  1. 1. Anomaly Vibration Classification for Condition Monitoring in Passenger Cars

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Rui Zhou; [2023]
    Keywords : ;

    Abstract : This research aims to investigate accurate classification of anomalous vibrations produced during vehicle operation. The main research questions are which data can be used as classification criteria, which models can better achieve classification effects, and how to address classification issues under different variables in a car. READ MORE

  3. 2. The Effect of High Wheel Impact Load on the Rail Reliability - a Case Study at Bodsjön

    University essay from KTH/Spårfordon

    Author : Ngoc Thúy Vy Dang; [2021]
    Keywords : rail defects; rail reliability; Ultrasonic Test; wheel damage; Wheel Impact Load Detector; statistics; järnvägsdefekter; järnvägssäkerhet; ultraljudstest; hjulskador; hjullastningsdetektor; statistik;

    Abstract : This study focuses on the reliability of railway track in the relation with high loads resulted from wheel damages, where higher (dynamic) vertical wheel loads are expected from trains with damaged wheels. The Swedish Transport Administration (Trafikverket) has monitored and recorded data of rail defects and breaks. READ MORE

  4. 3. Improving the validation of a railway vehicle model in the virtual certification process

    University essay from KTH/Spårfordon

    Author : Bente de Leeuw; [2021]
    Keywords : Rail vehicle dynamics; Rail vehicles; Rail profiles; wheel profiles; model validation; Dynamik; järnvägsfordon; järnvägsprofiler; hjulprofiler; modellvalidering.;

    Abstract : Before vehicles can be placed in service it has to complete an authorisation process. At the moment,this process is largely depended on tests. This is, however, an expensive and long process. With new technologies and improved simulations this process can be shortened and the costs can be lowered. READ MORE

  5. 4. Improvement of Steering Performance of a Two-axle Railway Vehicle via Look-up Tables Estimation

    University essay from KTH/Spårfordon

    Author : Prapanpong Damsongsaeng; [2020]
    Keywords : Two-axle railway vehicle; Active steering system; Look-up tables; Time-varying wheel-rail contact parameters; Två-axligt järnvägsfordon; aktiv styrning; uppslagstabeller; tidsvarierande hjul-rälskontaktparametrar;

    Abstract : A conceptual design of an innovative two-axle lightweight railway vehicle for commuter services is carried out at KTH Railway Group. An active wheelset steering is introduced to improve the curving performance of the vehicle, which is one of the critical performance requirements. READ MORE

  6. 5. The Effect of Geometrical Contact Input to Wheel-Rail Contact Model

    University essay from KTH/Spårfordon

    Author : Michael Martin; [2018]
    Keywords : Wheel-rail contact; geometrical contact input; contact point search; contact patch; rail vehicle.;

    Abstract : Wheel-rail contact is an important aspect of railway, the forces transferred between the wheel and rail are the one that guide, brake, or accelerate the train, and that is why the understanding of the contact between wheel and rail is an interesting research topic. In this master thesis wheel-rail contact model named ANALYN is used to see the effect of the different geometrical input, like undeformed distance, relative longitudinal curvature, and relative lateral curvature calculation affect the contact patch estimation formed at the wheel-rail contact. READ MORE