Sökning: "RVE"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet RVE.

  1. 1. Effective shear stiffness of cross-laminated timber : Comparison between numerical and analytical approaches

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Therese Badrous; Las Muradi; [2023]
    Nyckelord :;

    Sammanfattning : The increasing importance of sustainability has led to a focus on smart solutions for energy consumption and materials. Cross-laminated timber (CLT) has gained attention as a sustainable alternative in construction, offering high strength, stiffness, and dimensional stability. LÄS MER

  3. 2. Multiscale mechanical modeling of paperboard

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

    Författare :Gustav Boman; [2022]
    Nyckelord :Paperboard; micromechanics; multiscale; fiber; X-ray; RVE; Technology and Engineering;

    Sammanfattning : This thesis considers an investigation into the possibilities of creating a reasonably accurate multiscale material model for paperboard, with geometry based on X-ray scans of small paperboard samples. The modeling takes place in the software Multiscale Designer by Altair Engineering Inc. LÄS MER

  4. 3. 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

  5. 4. 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

  7. 5. Methods for modelling lattice structures

    Master-uppsats, KTH/Hållfasthetslära (Avd.)

    Författare :Mona Kouach; [2019]
    Nyckelord :Lattice structures; Finite element method; Homogenization; Representative volume element;

    Sammanfattning : The application of lattice structures have become increasingly popular as additive manufacturing (AM) opens up the possibility to manufacture complex configurations. However, modelling such structures can be computationally expensive. LÄS MER