Search for dissertations about: "rail"

Showing result 1 - 5 of 208 swedish dissertations containing the word rail.

  1. 1. Rail Tunnel Evacuation

    University dissertation from Division of Fire Safety Engineering

    Author : Karl Fridolf; SP Fire Research.; Lund University.; Lunds universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; smoke; walking speed; flow rate of people; experiment; train; tunnel; metro; underground rail transportation system; evacuation; Human behavior in fire;

    Abstract : In this thesis, human behavior in rail tunnel fires is explored. Descriptive knowledge is presented related to the evacuation of passenger trains, and the subsequent tunnel evacuation to a safe location. READ MORE

  2. 2. Influence of rail, wheel and track geometries on wheel and rail degradation

    University dissertation from Division of Fire Safety Engineering

    Author : Kalle Karttunen; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; track geometry; rolling contact; rail; railway; Rolling contact fatigue; maintenance; wear; wheel;

    Abstract : For more efficient railway maintenance there is a need to increase the understanding of the influence of operational conditions on wheel and rail degradation. To this end, the chosen primary investigation strategy is to employ dynamic multibody simulations, where operational conditions are altered, to estimate the influence on material deterioration. READ MORE

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

    University dissertation from Stockholm : KTH

    Author : Roger Enblom; KTH.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel-rail contact; wear; wear prediction; wear model; wheel profile; rail; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Abstract : 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. READ MORE

  4. 4. Simulation and Measurement of Wheel on Rail Fatigue and Wear

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Babette Dirks; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multibody simulations; prediction; wear; RCF; wheel; rail; cracks; measurements; Farkostteknik; Vehicle and Maritime Engineering;

    Abstract : 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. READ MORE

  5. 5. Delays and Timetabling for Passenger Trains

    University dissertation from Lund University Faculty of Engineering, Technology and Society, Transport and Roads, Lund, Sweden

    Author : Carl-William Palmqvist; Lund University.; Lunds universitet.; [2019-11-08]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rail; delay; timetable; train; punctuality; Rail transportation;

    Abstract : Travel by train has increased steadily in Sweden the last 30 years. The pace has been about two to three percent per year, and we now have twice as many passengers. With growing awareness of the changing climate, the pace is increasing further. A problem that affects both passengers and businesses in Sweden is train delays. READ MORE