Sökning: "contact prediction"

Visar resultat 6 - 10 av 116 avhandlingar innehållade orden contact prediction.

  1. 6. Simulation of Wheel and Rail Profile Evolution : Wear Modelling and Validation

    Författare :Roger Enblom; KTH; []
    Nyckelord :contact; wear; wear prediction; wear model; wheel profile; rail profile; simulation vehicle-track interaction; multibody simulation; MBS; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Numerical procedures for reliable wheel and rail wearprediction are rare. Recent development of simulationtechniques and computer power together with tribologicalknowledge do however suggest computer aided wear prediction. LÄS MER

  3. 7. On Simulation of Uniform Wear and Profile Evolution in the Wheel - Rail Contact

    Författare :Roger Enblom; Mats Berg; Simon Iwnicki; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel-rail contact; wear; wear prediction; wear model; wheel profile; rail; Vehicle engineering; Farkostteknik;

    Sammanfattning : Numerical procedures for reliable wheel and rail wear prediction are rare. Recent development of simulation techniques and computer power together with tribological knowledge do however suggest computer aided wear prediction as possible. LÄS MER

  4. 8. Adhesion in the wheel-rail contact

    Författare :Yi Zhu; Ulf Olofsson; Anders Söderberg; Zili Li; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adhesion; wheel-rail contact; contaminants; tribology; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

    Sammanfattning : 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. LÄS MER

  5. 9. Simulation and Measurement of Wheel on Rail Fatigue and Wear

    Författare :Babette Dirks; Mats Berg; Roger Enblom; Mark Burstow; KTH; []
    Nyckelord :multibody simulations; prediction; wear; RCF; wheel; rail; cracks; measurements; Vehicle and Maritime Engineering; Farkostteknik;

    Sammanfattning : The life of railway wheels and rails has been decreasing in recent years. This is mainly caused by more traffic and running at higher vehicle speed. LÄS MER

  7. 10. Clinical curse, predictive factors and effects of intervention after attempted suicide. A randomised controlled study

    Författare :Marie Cedereke; Lund Psykiatri; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; repetition; Psychiatry; clinical psychology; psychosomatics; Psykiatri; klinisk psykologi; psykosomatik; prediction; needs; treatment attendance; suicidal thoughts; suicide attempt; prospective study; intervention; follow-up; randomised controlled study;

    Sammanfattning : Abstract One important task for the mental health services is to prevent suicidal behaviour, especially among persons at high risk, e.g. those who have attempted suicide. LÄS MER