Sökning: "Vertical vibrations"

Visar resultat 1 - 5 av 39 uppsatser innehållade orden Vertical vibrations.

  1. 1. Reliability-Based Sensitivity Analysis of the Dynamic Response of Railway Bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Hasan Al-Zubaidi; [2022]
    Nyckelord :Railway bridges; High-speed trains; Simply supported beam; Global sensitivity analysis; Uncertainty quantification; Reliability; Ballast instability; Running safety; Passenger comfort;

    Sammanfattning : In response to the planned increase in operational speeds and axle loads of passengertrains that may lead to resonance-induced excessive vibrations in railway bridges,recent studies examined the reliability of bridges concerning train running safety andpassenger comfort limit states. In this respect, valuable information regarding theimportance of input variables can be obtained by conducting Sensitivity Analysis (SA). LÄS MER

  3. 2. Test Equipment for Physical Testing of Vibration Isolator

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :ADAM ALVETEG; MARKUS JOHANSSON; [2021]
    Nyckelord :Test rig; vibration isolator; hysteresis; Testrigg; vibrationsisolator; hysteres;

    Sammanfattning : Vibrations is a phenomenon that can cause problems to systems if not dealt with. In heavy duty trucks, vibrations are mainly caused by uneven roads and from the combustion engine. Vibrations can damage components, reduce their service life and cause discomfort for the driver. LÄS MER

  4. 3. Chassi- och hjälpramsinfästningar : utredning och analys av flexibla fästen på lastbil

    M1-uppsats, Linköpings universitet/Maskinkonstruktion

    Författare :Johan Malmrud; [2020]
    Nyckelord :flexible brackets; brackets; subframe; flexibla fästen; chassi; hjälpram; infästningar; hjälpramsinfästningar; chassiramsinfästningar; lastbil; Johan Malmrud; spänningsbild; maskinteknik; byrålådseffekt; byrålådseffekten;

    Sammanfattning : Lastbilar som har en påbyggnation, såsom en tippbil, sopbil eller lastbil med kran, behöver ha en hjälpram fastsatt på sin chassiram för att kunna säkerställa lastbilens form och funktion. Dessa chassiramar och hjälpramar sätts ihop med olika typer av fästen. LÄS MER

  5. 4. Numerical and experimental dynamic analyses of the Vega Pedestrian bridge including seasonal effects

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :John Hallak Neilson; [2019]
    Nyckelord :;

    Sammanfattning : As timber structures become increasingly relevant and sought after – since they enable improvements in building time while reducing a structure’s life cycle impacts – streamlining their design can have meaningful economic and environmental implications.For timber footbridges, its design is frequently governed by serviceability criteria linked to excessive vibrations. LÄS MER

  7. 5. Numerical and experimental dynamic analyses of the Vega Pedestrian bridge including seasonal effects

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :John Peter Hallak Neilson; [2019]
    Nyckelord :Structural dynamics; Timber structures; Seasonal effects; Asphalt; Footbridges; Arch bridges; Dynamic analysis;

    Sammanfattning : As timber structures become increasingly relevant and sought after – since they enable improvements in building time while reducing a structure’s life cycle impacts – streamlining their design can have meaningful economic and environmental implications. For timber footbridges, its design is frequently governed by serviceability criteria linked to excessive vibrations. LÄS MER