Sökning: "Standard linear solid"

Hittade 5 uppsatser innehållade orden Standard linear solid.

  1. 1. Micromechanical modelling of creep in wooden materials

    Kandidat-uppsats, Uppsala universitet/Tillämpad mekanik

    Författare :Oskar Falkeström; Kevin Coleman; Malin Nilsson; [2021]
    Nyckelord :Creep; RVE; Homogenization; Honeycomb; Tracheid; Comsol Multiphysics; Micromechanical modelling; Orthotropic; Parametric study; S2 material; Norwegian Spruce; Scots Pine; Cell geometry;

    Sammanfattning : Wood is a complex organic orthotropic viscoelastic material with acellular structure. When stressed, wood will deform over timethrough a process called creep. Creep affects all wooden structureand can be difficult, time-consuming and expensive to measure. For this thesis, a simple computer model of the woodenmicrostructure was developed. LÄS MER

  3. 2. Micro-architectured materials for noise and vibration control in high voltage products – design and modelling

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Alec Chamberlain; [2021]
    Nyckelord :Microarchitectured; lattice; elasticity; viscoelasticity; computational; homogenization;

    Sammanfattning : Many Hitachi ABB Power Grids (HAPG) products vibrate and emit noise, but legal limitations of these parameters fuel the development of energy absorption methods used on products. Methods such as Constrained Layer Damping (CLD). LÄS MER

  4. 3. Hall Measurements at Cryogenic Temperatures

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Viktor Wallén; [2021]
    Nyckelord :Hall measurement; Hall effect; Cryoelectronics; Cryogenics; Subthreshold slope; Subthreshold swing; Mobility; Carrier Concentration; Resistivity; Boltzmann limit; van der Pauw measurement; Semiconductor; Nanoelectronics; Nanophysics; Solid state physics; Technology and Engineering;

    Sammanfattning : Kryoelektronik är av allt större intresse inom många tillämpningar, exempelvis för utveckling av kvantdatorer. Detta arbete vill därför undersöka de effekter kryogeniska temperaturer (under 10 K) har på halvledarkomponenter och deras elektriska egenskaper. Särskilt intressant är effekten på subthreshold swing (SS). LÄS MER

  5. 4. Some deviations from linear dynamics due to more accurate damping models

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Jakob Sjöstrand; [2017]
    Nyckelord :Bilinear hysteresis; Standard linear solid; SLS; Linear Dynamics; Non-linear Dynamics; Technology and Engineering;

    Sammanfattning : Damping is present in all dynamic systems. In one way or another energy is being dissipated in the system. To capture this aspect of reality in a computational model is a difficult task. A common simplification is to assume that the damping is of a linear viscous nature. LÄS MER

  7. 5. Determination of viscoelastic properties of adhesives

    Magister-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

    Författare :Patrik Karlsson; [2014]
    Nyckelord :Adhesives material; Tension test; Stress; Strain; Viscoelastic; Timber; Glass;

    Sammanfattning : A research project at Linnaeus University focuses on optimizing theadhesives joints between wood and glass, with the aim of obtain stiffcomponents that can act as a load and stabilizing elements and still betransparent. But there is, however, still a lack of knowledge regarding theadhesive materials which need to be further investigated. LÄS MER