Sökning: "Dynamic load"

Visar resultat 1 - 5 av 389 uppsatser innehållade orden Dynamic load.

  1. 1. Global Analysis of a Tall Timber- Concrete Hybrid Structure Subjected to Wind Load : A Parametric Study of Different Hybrid Solutions

    Master-uppsats, KTH/Betongbyggnad

    Författare :Clara Youssef; Meriam Basilious; [2022]
    Nyckelord :;

    Sammanfattning :   Tall timber structures have received more attention in recent times as building withtimber contributes to environmental benefits in comparison to other building materials.Timber- concrete hybrid structures have become an alternative as previous investigationshave shown that building tall timber buildings implies complexities with regardsto sufficient stiffness and discomfort for occupants. LÄS MER

  2. 2. Electric Road Systems: A case study on the bridge of Öresund

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Jakob Svensson; [2022]
    Nyckelord :Electric road systems; Transportation; Electric Vehicle; Technology and Engineering;

    Sammanfattning : Combustion of fossil fuels is single-handedly the largest contributor of global warming. The transportation sector is responsible for about a third of the greenhouse gas emissions yearly in Sweden. In turn, road traffic makes up the largest share within the transportation. LÄS MER

  3. 3. Influence of current harmonics on the degradation of the catalyst coated membrane in PEMFC

    Master-uppsats, KTH/Kemiteknik

    Författare :Evelina Ahlén Norberg; [2022]
    Nyckelord :Proton Exchange Membrane Fuel Cell; Ripple Current; Current Harmonics; Degradation; Marine transportation; Polymerelektrolytbränslecell; Rippelström; Strömoscillation; Åldring; Sjötransport;

    Sammanfattning : Sjöfarten är idag dominerad av förbränningsmotorer som är beroende av fossila drivmedel. Elektrifiering är en av huvudstrategierna för att möjliggöra fossilfri energiförsörjning inom internationell sjöfart. LÄS MER

  4. 4. 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

  5. 5. Spectral density approach for dynamic analysis of high-speed railway bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Alket Ciku; Vlad Gavriliuc; [2022]
    Nyckelord :;

    Sammanfattning : The focus of this thesis is to introduce the concept of train signature in the spectraldensity approach used in the dynamic analysis of simply-supported railway bridges.Due to the increased transportation demands, longer trains with higher axles loadsand top speeds are being developed. LÄS MER